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Honor 9 lite Dead Solution: eRecovery mode while Charger is connected

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honor-9-lite

In this article, I will explain how to repair Honor 9 lite which shows recovery mode while charging. Many of the Honor 9 lite users will find it very useful.

The Problem:

If your mobile phone Honor 9 lite is dead and you can not power it on, but it shows recovery mode when charging the mobile, the solution is very simple.

Why this problem occurs?

This type of problem happens after you drop the mobile and your mobile must be opened for repair previously.

When the battery is disconnected from main board, the mobile can be switched on and it shows erecovery mode while charger is connected.

When you give it to repair, the technician does not mount the battery connector cover. If you drop your phone, the battery is disconnected from main board easily.

How to repair?

You can repair Honor 9 lite at your home easily. You must have 3 tools to disassemble the mobile.

  • Glue for Mobile Repair
  • Hair dryer
  • Plastic card

The back panel is made of glass. It is pasted with some glue.Heat the back panel of Honor 9 lite using your hair dryer for 5 minutes. It will soften the glue.

After heating up, try to insert the plastic card in between the middle frame and back panel. Move the plastic card to and fro.

In this way, you will remove the back panel of Honor 9 lite.

After removing the back panel, plug the battery connector in the main board and your problem will be resolved.

Apply glue on the side of the frame. Align and paste the back panel on the middle panel. Keep 5 books on the mobile for 2 to 3 hours so that the glue will be harden enough to hold the back panel.

If you want to watch the video how I repaired this fault, visit my YouTube channel.

Redmi Note 5 White light Blinking, No Power Solution

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Redmi note 5 white light blinking is a very often problem nowadays. It happens due to many types of faults.

In this article, I will guide you on how to repair the dead Redmi note 5 white light only blinking when the charger is connected.

Possible Faults:

1. Faulty Battery

2. Faulty PMI IC

3. Processor / SoC Dryness

Let’s discuss it one by one.

If your Redmi Note 5 mobile’s white light is blinking while charging, first check the battery voltage.

The battery voltage should be more than 3.75V. If the battery voltage is less than 3V, try to boost the battery voltage up to 3.8V using DC Power Supply Or Battery Activator.

When the battery voltage goes below 2.8V, a normal charger cannot charge the Battery. This results in white light blinking in Redmi Note 5. You need to boost the Battery to 3.8V.

Now try to switch it on.

Sometimes though the Battery voltage is Ok, it does not power on the mobile phone due to high internal resistance in the Battery Protection Circuit.  It does not supply the required current. So you must try another good Battery Or repair the old Battery.

Click here to know how to repair Mobile Battery.

If your mobile turns on normally with a new or repaired Battery, then your problem is solved. If not, follow the next step.

There are two Power Management Integrated Circuits (PMICs) in Redmi Note 5 Mother Board. 

  • Primary Power IC (PM660)
  • Secondary Power IC (PMI8952)

If this secondary power IC PMI8952 is faulty, the white light blinking problem arises. This is installed near the Processor.

First, try to reflow PMI8952 and check whether Redmi Note 5 is turning on or not.

If not turning on, replace it with new PMI8952. It should solve your problem.

If the above methods don’t work, heat the Processor at 360°C for 3 minutes using Hot Air Machine. Sometimes the balls under SoC or processor get dry soldered. So when you heat the SoC, the balls will be connected with the bonding pads again.

In this way, the white light blinking problem can be repaired in Redmi Note mobile phone.

I have made a video on this problem on my YouTube Channel.

Click here to watch

Hard Reset of Samsung Mobile Phones after Android 11 latest update

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In this article, I will help you to do hard reset of Samsung Mobile phones which is already updated to Android 11.Here I will give an example of Samsung Galaxy M30s. If you forget your pattern lock or phone lock, it will definitely help you.

Before doing hard reset, please be sure your all data will be erased by this process.

Requirements:

For the latest Android 11 updated models, you need a computer or laptop and a data cable to proceed with this hard reset.

Steps:

  • Connect Samsung M30s mobile to PC or laptop using data cable. You will see the charging symbol after the data cable connection. Do not connect the mobile with the Charging adaptor.
  • Switch off your mobile. It will require your passcode or pattern lock to enter for switching off your mobile. If you don’t know your passcode, you can switch off Samsung M30s forcefully. For this, press down Power Key, Volume Up key & Volume Down simultaneously till the charging logo appears. Release all keys and your mobile is switched off now.
  • Enter into Android Recovery Mode. Press Volume Up Key and Power Key simultaneously till Android Rect Page appears. You can disconnect data cable from Samsung M30s mobile now.
  • Go to Wipe Data / Factory Reset. Touch screen will not be functional in Android Recovery mode. Volume Up, volume down and Power Key are used to navigate. So press volume down to go to Wipe Data/ Factory Reset bar.
  • Do Wipe Data and factory reset. After going to Wipe Data/ Factory Reset bar, press Power key once. It will ask for confirmation. Press volume down once and then press power key to wipe data and factory reset your Samsung M30s mobile. You can see ‘Wipe data complete’ after successfully formatting.
  • Reboot your Samsung M30s. Once data wiping completes, ‘Reboot system now’ is already highlighted. Press power key once to reboot your mobile. To complete reboot or restart, it will take 3 to 15 min. Older mobile having more data takes more time to reboot the mobile.

After rebooting the mobile, it will come to the starting page. In this way, you will successfully hard-reset Samsung mobile phones.

For better understanding, you can watch my YouTube video below. Please do subscribe to my channel.

Samsung J7 Prime Charging error due to Temperature too high

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In this article, I will explain how to repair charging error in Samsung J7 Prime / On nxt / On7 Prime due to temperature too high. There are different versions of this model. These are G610F, G610F/DS, G610F/DF, G610M, G610M/DS, G610Y/DS.

How this charging error comes?

If mobile is switched off, you will get an orange colored triangle symbol when charger is connected.

orange triangle charging error

If the mobile phone is on and you connect the charger to the phone, you will get an error message like this,

Let’s repair the Charging error

THERMISTOR

Generally, temperature too high or low errors come due to the faulty Thermistor. It is a resistor whose resistance strongly depends on the temperature.

The term Thermistor comes from Thermal + Resistor

Thermistors are of two types.

  1. NTC (Negative Temperature Coefficient type)
  2. PTC (Positive Temperature Coefficient type)

In NTC type thermistor, if the temperature increases, the resistance of the thermistor decreases.

In PTC type thermistor, if the temperature increases, the resistance of the thermistor increases.

Mostly NTC type thermistors are used as temperature sensor. If your mobile phone is actually too hot due to some problem, the CPU stops the charging as the resistance of the thermistor decreases.

But sometimes, the thermistor is faulty and its internal resistance decreases irrespective of any change in temeperature. And most of time, this type of error comes from a faulty thermistor.

In this case, removing the faulty thermistor can charge the mobile phone well, but it is recommended to replace with a new thermistor. Thermistor is used for the protection of the mobile phone.

REPAIR PROCESS

First, you need to disassemble the Samsung J7 prime. Take out the main board and check the thermistor.

The thermistor is present near the charging port. See the below picture to find out the thermistor.

How to check the thermistor

First check the resitance of the thermistor (say R1) using a multimeter.

Apply heat on the thermistor by SMD Machine or Hot air blower. Check the resistance (say R2)

If the resistance remains unchanged, i.e. R1=R2, then the thermistor is faulty.

Now, remove the faulty thermistor and replace with a new one. Your mobile will charge well.

To watch the video,

Samsung Galaxy J7 Prime Charging error Solution

If the article is very useful to you, reply in the comment box.

Vivo V11 Pro Display Screen Replacement Guide

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This tutorial helps you to change the damaged or cracked display screen of Vivo V11 Pro. You can purchase the display online from Flipkart or buy from local store.

As you know, Vivo V11 Pro has an on-screen fingerprint sensor. When you buy the display combo, check whether the on-screen fingerprint sensor will be working or not. Because there are two types of generic display screens available for Vivo V11 Pro in the market.

Tools required for display replacement

  • Pry tool or Opener
  • Separator Machine or Hair Dryer
  • Special Glue of Display Screen
  • Tweezer
  • IPA or Thinner
  • Screw Driver

Procedure

Step:1 Remove the Back Panel

  • There are 2 Screws near Charging Port. Remove them first.
  • Remove Sim Tray
  • Remove the Back Panel using the Pry tool or Opener

Step:2 Disconnect Battery & Display Connector from Board

  • Unbolt all screws of Main Board & Sub Board Cover
  • Remove both covers
  • Detach the Battery connecter from Main Board
  • Pull out the green sticker to remove the battery
  • Detach the Display Connector, Main board to Sub Board ribbon connector and fingerprint sensor flex from Sub Board
  • Disconnect the coaxial antenna cable from the Sub-board.
  • Gently remove the sub board

Step:3 Remove the old Display Combo

  • Heat the old Display Combo at 100°C with the help of Separator Machine. If you don’t have Separator Machine, you can simply use the Hair Dryer to heat up the Screen.
SEPARATOR MACHINE
  • Heat around 4-5 minutes. It will soften the glue the screen.
  • Take any plastic card. Try to insert it between the screen and the middle frame.
  • Gently silde down it from top to bottom and remove the Display Screen.

Step:4 Mounting the New Display Combo

  • Clean the old glue from the middle frame.
  • Use Isopropyl Alcohol (IPA) to clean the glue easily.
  • Apply the Special Glue on the sides of the frame.
APPLYING GLUE ON FRAME
  • Wait for 3 minutes for better result.
  • Insert the Display Connector in the frame first.
  • Align the Display Combo with the middle frame and fix it on the frame.

Step:5 Assembling the Smart phone

  • Connect the display with the Sub-board.
  • Connect the fingerprint sensor and ribbon, coaxial antenna cable in Sub-board
  • Place the battery at its position.
  • Now atlast connect the battery in the main board
  • Place both Main Board and Sub-board covers and tighten the screws
  • Mount the Back cover
  • Insert Sim tray
  • Tighten both screws near Charging Port

Use rubber bands to press down the display.

Now Power on the mobile and check the Display.

Remove the rubber band after 12 hours. Generally the curing time of the glue is written on the Glue Tube.

In the way you can change the damaged display of Vivo V11 Pro.

For more convenient, I am providing the YouTube video which demonstrates how to replace the damaged display of Vivo V11 Pro.

Click here to watch the video

To learn the proper use of DC Power Supply, Click here

DC Power Supply uses and functions in Mobile Repairing

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DC Power Supply is a must having tool for Mobile repairing. It is used for finding various types of Faults in Mobile phones. Let us discuss how to find faults using DC Power Supply.

DC Power Supply basically has a Voltmeter, an Ammeter, and two Probes.

DC Power Supply
DC Power Supply

We can adjust the voltage ranging from 0V to 15V using a Voltage regulator. Some Power supply comes with 0V to 30V, 0V to 60V also. The voltmeter measures the input voltage given to the mobile.

Similarly, we can limit the Amperage of DC Power Supply. DC Power Supply comes with up to 10A limit. We can regulate the amperage of DC Power supply using Ampere Regulator.

The ammeter measures the current consumption by the mobile. It ranges from 0mA to 1000mA. The unit of current is 1 Ampere (1A).

1A= 1000mA

I have listed down the best uses of DC Power Supply.

  • To power on mobile phone without battery
  • To boost up battery voltage
  • To find out Shorting in mobile phones
  • To check Stuck on logo and Boot looping in Mobile Phones
  • To check some parts in the Mobile Phones

Let’s discuss one by one.

To Power on Mobile Phone without Battery

The first step to check a dead mobile is to check the battery. Sometimes Mobile is ok, but there is a problem with the battery. You can use DC Power Supply to check whether the mobile switches on by using connecting the Probes to the Battery Connectors.

DC Power Supply Probes

There are two Probes in a DC Power Supply.

  • Positive Probe or Red Probe
  • Negative or Ground Probe or Black Probe.

To power on the mobile phone :

  1. Switch on the DC Power Supply.
  2. Set the voltage in between 3.7V to 4.2V
  3. Connect the Red Probe with the positive pin of the battery connector and Black probe to the Ground.

For an in-built battery, we can use dedicated power cable instead of common probes.

dedicated power cable
Dedicated power cable

To boost up the Battery voltage

When a mobile or smartphone is dead or switched off for a long time, the battery voltage reduces gradually.

The normal voltage of the battery is between 3.7V to 4.2V. When the battery voltage goes below 2.8V, it can not be charged with a normal charger. In this case, we need to boost up the battery voltage with the help of DC Power Supply.

Sometimes the battery voltage reduces to 0V due to full-shorting in the mobile. A normal charger can not boost up the voltage of the battery.

How to boost up the battery voltage

  • Set DC Power Supply voltage at 4.2V and Amperage 2A.
  • Connect the Red Probe or Positive Probe to Positive(+) terminal of the battery and Black probe or Negative Probe to Negative(-) terminal of the battery.
  • Keep charging for 2 to 5 minutes and disconnect the probes.
  • Check the battery voltage.
  • When Battery voltage goes beyond 3V, do charging using a normal charger to reach VBatt to 3.8V.
  • You can boost the Battery voltage to 3.8V using DC Power Supply also. But it is always recommended to charge with the normal charger when the battery voltage reaches to the threshold voltage(2.8V)

To find out the Shorting in Mobile Phones

We can find out the shorting in mobile phones using the DC Power Supply easily. Shorting happens when the positive line in the Mobile phone comes in contact with the ground due to the faulty components or ICs.

How to check Shorting

  • Set the DC Power Supply at 4V and 1.5A.
  • Connect the positive probe of DC Power Supply to Positive Battery connector and -ve probe of DC Power Supply to Negative Battery Connector.
  • Check the Current consumption at DC Power Supply without pressing the Power key of the Mobile Phone. You can get 3 types of Current readings.
  1. Current Reading = Set Current
  2. Current Reading < Set Current
  3. Current Reading = 0 mA

Current Reading = Set Current

If Current consumption is equal to set current without pressing the power button, this condition is known as Full Shorting.

Some components like Capacitors, Diodes are fully shorted to ground. The internal resistance is 0 ohm of shorted component.

You can identify the shorted component by using Thermal Camera or Isopropyl Alcohol. Because the shorted component releases heat when the power supply is connected to Mobile Motherboard.

Current Reading < Set Current

If the current consumption is less than set current (in this case, 1.5A) without pressing the power key, it is called Half-Shorting. The half-shorted component in Mobile Phone is partially shorted. 

Some mobile phones switch on in the case of half shorting. But it causes overheating of the Mobile phone. Also some functions do not work perfectly due to half shorting.

Current Reading = 0 mA

If the current reading is equal to 0 mA, that means there is no drop in the current before pressing the Power Switch, then the mobile is in OK condition. There is no shorting in this condition.

To check Stuck on logo and Boot looping in Mobile Phones

When you switch on the smartphone or mobile and it is unable to boot completely and stuck on company’s logo, this condition is popularly known as ‘Stuck on logo

When the smartphone restarts continuously, this condition is known as ‘Boot looping

Both Stuck on logo and Boot looping occur when there is software as well as hardware problem. Before proceeding any software work in mobile, check for hardware problem.

A weak and faulty battery can cause your smartphone to stuck on logo or Boot looping. So a DC power supply can help you to find out the battery problem causing Stuck on logo and Boot looping.

The following video helps you to learn how a faulty battery can boot loop the mobile.

Subscribe to the channel

To check some parts in the Mobile Phones

DC power supply is very useful to check some parts of the smartphones.

The parts like Vibrator, Ear speaker, Ringer, Camera Flashlight, etc can be checked by DC power supply.

How to check Vibrator using dc power supply

Vibrator is a small part of the smartphone. It is usually a motor which creates vibration.

Mobile Vibrator

To test the vibrator:

  1. Set dc power supply voltage at 3V
  2. Connect both probes of dc power supply to the terminals of the vibrator, irrespective of polarity.
  3. If the motor spins and vibrates, then it is ok.

How to check Ear speaker and Ringer using dc power supply

Mobile Ear Speaker

To test ear speaker and ringer:

  1. Set dc power supply voltage at 1.8V
  2. Connect one of the probes of dc power supply to one of the terminals of the ear speaker / ringer and touch another probe to the remaining terminal.
  3. You will hear some speaker noise while touching. In this case, ear speaker/ringer is ok.

These are some basic uses of dc power supply in mobile repairing. I hope this article must help you to develop your mobile repairing skill.

If there are any queries regarding dc power supply, please comment below.

Infinix Hot 6 Pro Tear Down and Display Replacement Guide

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This article helps you to tear down Infinix Hot 6 Pro and shows a complete guide to replace its display. You can easily change the sub-board, ear speaker, ringer, back panel, display, battery, mic, charging port or cc, earphone jack, vibrator, power on & volume switch, etc. with the help of this article.

Let’s discuss step by step.

STEP-1: Removal of Back Panel

First, remove the sim tray

Apply heat to the sides of the Back Panel to soften the glue. Be careful while applying heat, because the back panel is made of plastic.

Disconnect the finger-print flex from the mainboard carefully.

infinix hot 6 pro back panel
Back Panel of Infinix Hot 6 Pro

STEP-2: Removal of Mother Board

Remove all 7 screws to separate the Mother Board protector cover.

Disconnect Battery Flex, Display Flex, Sub-Board Flex, and RF Cable.

Now you are safe to separate Mother-board.

STEP-3: Removal of Sub-Board

A typically Sub-board has Charging port, mic, Ringer or Loudspeaker connection points, sometimes earphone jack, Network antenna, etc.. It is situated bottom of the phone.

To remove sub-board from Infinix Hot 6 Pro, you need to remove all screws of the sub-board plastic cover. The plastic cover contains the ringer. Then remove the plastic cover.

After removing the subboard plastic cover, you can see the sub-board.

Detach the sub-board flex, RF Cable and remove that sub-board screw. Then remove the sub-board.

If there is a problem related to charging port, mic, earphone port, then simply change the sub-board of Infinix hot 6 Pro.

STEP- 4: Removal of Battery and Display

There are two strips of glue behind the battery. Just pull the glue out carefully and the battery will be released easily. If the glue strip is broken, use a pry tool and Isopropyl alcohol to release the battery

To remove the display of Infinix Hot 6 Pro from the frame, You need to give heat 80C for 5 minutes. It will soften the glue. Make a gap between the display and the frame using a plastic card or similar to that and remove the display carefully.

STEP- 5: Display Replacement

Before changing the new display, check whether the display is working perfectly or not. Do not remove the screen guard and the tag of the new display before checking. Because most of the sellers do not accept return if the screen guard and the tag are removed.

Infinix hot 6 pro display

Click here to buy the display of Infinix hot 6 Pro from Flipkart

Clear the glue from the sides of the frame using Isopropyl alcohol. Apply the new glue side of the frame. Ensure not to flow glue on the camera and the sensor front.

I am using E8000 glue for the display fitting.

display fitting glue e8000


Click here to buy the glue from Flipkart

Align the display with the frame and assemble the phone properly. Put plastic clips or rubber bands about 8 hours for better fitting. And your phone is ready to use.

If there are any doubts, feel free to comment below.

Xiaomi Redmi Note 4 Display Replacement

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Xioami Redmi Note 4 is a very popular phone in India. It was released in January 2017 in India. If you are a Redmi Note 4 user or a new Mobile Technician, this article is for you.

This article is about display replacement of Xioami Redmi Note 4.

The display of Xioami Redmi Note 4 contains two parts.

  1. Digitizer or Touch
  2. LCD

Sometimes both touch and LCD get damaged. In that case, you have to change full combo or display of Xioami Redmi Note 4.  Its cost ranges from Rs1000 to Rs 2500.

If your LCD works perfectly and only Digitizer gets damaged, you may change the only Digitizer. The Touch or Digitizer of Xioami Redmi Note 4 costs around Rs200 only locally. Its online purchase costs around Rs600.

Though changing Touch is cheaper, it requires some extra skill. Both touch and LCD are fused by strong glue. It can be separated by Touch Separating Machine (costs around Rs 4000).  Again, OCA Lamination Machine is required for combining new Touch and LCD.

 

The following video shows how to replace the combo of Xioami Redmi Note4.

Lenovo P1M Display Screen Replacement Guide

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Have you cracked your Lenovo P1M ? Don’t worry !!! Here is the complete solution to change your Lenovo P1M Display. 

Before disassembling your Lenovo P1M, make sure you have proper tools, adhesive and hotter gun.

Tools requirement for Display Replacement

1. Mobile Opening Set:

This set includes Screw Drivers and Pry Tools.

2. Adhesive Glue for Display

This will help to joint the Display with the Mainframe of the mobile.

 

 
3. Heat Gun / Touch Separating Machine

This is required to separate the Display from the Mainframe of the mobile. The Display surface is heated with the help of either Heat Gun or SMD Machine or Touch Separating Machine or simply Hair Dryer. Yes, You can use Hair Dryer to separate the Display from the Mainframe.

Heat Gun

Touch Separating Machine

SMD Machine

Hair Dryer

Watch the following video and learn to change the Display screen of Lenovo P1M.

It also helps to change the damaged old Battery.

Samsung On5/ J5 Charging Port Replacement Guide

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Unlike other Android handsets, Samsung mobiles come with single Mother Board. There is no extra Charging Board. In Case of damaged Charging Connector, you need to change it.
While changing, the charging connector with SMD machine, care must be taken not to damage the board and the prints due to heating.
Once the prints get damaged, the complete mobile is also damaged.

The following video illustrates one of the best-changing procedure of Samsung on5 Charging connector. Watch and learn.

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Know Mobile Problem Types: Software or Hardware

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Broadly, there are two types of problems shown in a Mobile phone.1. Software-related and 2. Hardware-related. In this article, we will discuss different problems and their types with possible solutions. Let’s start.

When a customer brings a faulty mobile for repairing, you should know whether the problem is software related or hardware related. It is very important to identify the problem before repairing.

Software-related Problems

I have listed some software-related problems. They are:

  • Mobile stuck at Logo
  • Mobile auto restarting or rebooting continuously
  • Invalid IMEI number
  • Some OS files missing
  • Unable to remove Installed Apps
  • Forgot Pattern Lock / Security Password

These above-said problems can be solved by Flashing the right and stable firmware files. Otherwise, the mobile will be dead.

Hardware-related Problems

I have listed some hardware-related problems. These are :

  • Call not connected (Network related)
  • Not audible to other Person (MIC related)
  • Not audible to self (Ear speaker/Ringer/ Audio IC related)
  • Cracked Display
  • No Display
  • Touch not working
  • Slow or Fake Charging
  • No Charging
  • Mobile overheating

In these cases, faulty components need to be changed or replaced by new components.

Gionee P3S Touch Screen Replacement Guide

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Want to change cracked touch screen of Gionee P3S? Here is the best solution. Gionee P3S comes with separate Touch and LCD. Any damaged or cracked LCD or Touch can be changed differently.

The Price of Touch Screen or Digitizer of Gionee P3S is started from Rs250.

TOOLS USED FOR TEARDOWN AND REPLACEMENT OF DISPLAY :

  1. Mobile Opening Tools

2. Adhesive Glue for Display

3.  SMD Machine



Watch the following video and learn how to change the digitizer or touch of Gionee P3S. Watch the following video and learn how to change the digitizer or touch of Gionee P3S

Click here to buy Gionee P3S Touch Screen from Flipkart

Nokia 6 Display Replacement Guide

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Got cracked or damaged display in NOKIA 6 mobile? Here is the procedure that helps you to change the combo of Nokia 6.

It is very easy to replace the display of Nokia 6.

You need to heat the broken display with help of Display Separator machine or SMD Machine or simply Hair Dryer Machine. 

Check your availability of tools and follow the procedure.

 

Watch the following video and learn.

Gionee M5 Lite Tear Down and Display Replacement

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In this Video, You can learn how to change display-cum-touch of Gionee M5 Lite. This video also illustrates complete guideline to the teardown or disassembly of Gionee M5 Lite.

 

This video will you to guide to change your cracked display. If you want to change yourself at home, you can save a lot of Money. You can buy the display from your local market at a very cheap rate. It costs around Rs 1200.

You can buy from online Stores like from Amazon, Flipkart, Maxbhi at an affordable rate.

This video also helps to change Battery, Ringer, Volume Strip, Cameras, Charging Flex, etc..

Last, but not the least, Subscribe this YOUTUBE Channel to know more about Repairing Videos

Redmi Note 5 Pro Display Replacement Guide

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Redmi Note 5 Pro is a very popular smart phone in India. This article helps you to change the damaged display of Redmi Note 5 Pro. it also helps to change the Sub-Board, Finger-print and the Battery of  Redmi Note 5 Pro. If the Mic or the Charging port is faulty, change the Sub-board.

The price of generic display costs around Rs 1500 onwards. The Combo assembly has a common connector for touch and display.

Click here to buy the display of Redmi Note 5 Pro.

Before disassembling Redmi Note 5 Pro, make sure you have prope

r tools, adhesive and hotter gun.

Tools requirement for Display Replacement

1. Mobile Opening Set:

This set includes Screw Drivers and Pry Tools.

2. Adhesive Glue for Display

This will help to joint the Display with the Mainframe of the mobile.

3. Heat Gun / Touch Separating Machine

This is required to separate the Display from the Mainframe of the mobile. The Display surface is heated with the help of either Heat Gun or SMD Machine or Touch Separating Machine or simply Hair Dryer. Yes, You can use Hair Dryer to separate the Display from the Mainframe.

Heat Gun

Touch Separating Machine

SMD Machine

Hair Dryer

Let’s discuss step by step.

Remove the Sim Tray

Without removing the Sim Tray, you can’t remove the Back Panel Cover of Smart Phone.

Remove the Back Panel Cover

Use any pry tools to remove the Back Panel of your smartphone.  You can use your nail too. Make a gap between Back panel and Frame of the smartphone throughout and try to remove it properly. There are plastic-made locks around the frame, be sure not to damage these locks.

Remove Battery

First, disconnect the fingerprint sensor from the motherboard. There is a screw behind the fingerprint sensor. Unscrew it and detach the safety cover of Battery Connector. And disconnect the battery from board.

Note: It is important to disconnect the Battery from the Motherboard before starting any repairing job.

Second, Unscrew all screws of Ringer and Sub-board assembly. You can find it below the Battery. Remove Ringer and Sub-board carefully. Now you can find two glue strips of Battery. Pull them out carefully. And finally, Battery will be detached.

Fix Ringer and Sub-Board Assembly

Mount the Sub-Board and ringer previously.

Remove the damaged Display

Disconnect the display flex from the Motherboard.

Give heat throughout the display with the help of Hot Gun or SMD Machine. You can simply use Hair-Dryer to heat the display. Give heat for 3 to 5 min. It will help to soften the glue between the display and the frame. Make a gap between the display and frame using any plastic card and remove the Display from the frame.

Fix the New Display

Clean the old glue from the frame properly. Apply new glue (As told above) on all sides of the frame. Insert the display flex through the frame and fix the Display in the frame properly in its position. Connect the display connector to the main board

Assemble the remaining parts

Connect the battery, fingerprint sensor. Mount the Back Panel Cover. Use rubber bands to keep the display fit properly. It will take 8 hours to dry the glue. Turn the mobile on. Hurrey, you have successfully replaced the screen of the smartphone.

Samsung J2 Prime Charging Solution

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In this article, you can learn how to solve charging problem of Samsung J2 Prime with the help of  the charging ways. If there is track missing, then connect by the jumper wire as shown in the picture below.

Steps:

  • Insert Charger in Charging connector of Main Board
  • Check voltage at Battery Connector. It should be more than 3.6 V
  • Check components as shown in the above pictures by cold testing.
  • Check continuity of tracing lines as shown in the above picture. If there is no continuity shown, connect with the jumper wire.
  • Check voltage at Charging Connector while plugging Charger. It should be 5V.
  • Replace the Charging Connector.

Redmi 3S Prime Display Replacement

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In this article, I will discuss the simple procedure regarding the full display replacement of Xioami Redmi 3S and 3S Prime. Both Redmi 3S and 3S Prime are same except 3S Prime has an extra feature i.e. Fingerprint sensor at the back cover.


So while removing the back cover of 3S Prime, Care must be taken not to tear the sensor flex.

 

In the following video, I have shown how to disassembly Redmi 3S Prime in a perfect way. Watch and learn.

A Guide to HTC Desire 728G Battery Replacement

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HTC Desire 728G smart phone is powered by 2800mAh non-removable Battery. It was launched in October 2015. This article guides you to replace the old Battery with a new one.

I’ve shared a video below which shows how to replace HTC Desire 728G Battery on your own.

Click here to buy HTC Desire 728G Battery

Check it out and learn from it.

OPPO F3 Display Replacement Guide

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Oppo F3 is a very popular smart phone. In this article, we will discuss how to change the cracked or damaged display.

Before disassembling OPPO F3, make sure you have proper tools, adhesive and hotter gun.

Tools requirement for Display Replacement

1. Mobile Opening Set:

This set includes Screw Drivers and Pry Tools.

2. Adhesive Glue for Display

This will help to joint the Display with the Mainframe of the mobile.

 

3. Heat Gun / Touch Separating Machine

This is required to separate the Display from the Mainframe of the mobile. The Display surface is heated with the help of either Heat Gun or SMD Machine or Touch Separating Machine or simply Hair Dryer. Yes, You can use Hair Dryer to separate the Display from the Mainframe.

Heat Gun

Touch Separating Machine

SMD Machine

Hair Dryer

 

 

Watch the following video and learn to change the Display screen of Oppo F3

It also helps to change the damaged old Battery.

How to Increase or Upgrade RAM of a Laptop

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This article helps you to increase or upgrade RAM of a Laptop. You can increase your laptop RAM yourself with the help of some basic tools and save money.

Upgrading RAM helps in speeding up, multitasking and faster browsing of your computer.

Before proceeding, check your current RAM size and version. Also, find out the maximum upgrade size supported by your laptop.

HOW DO YOU IDENTIFY LAPTOP RAM DETAILS?

There are two ways you can identify your RAM details easily.

DIGITALLY 

  • Right click on Taskbar
  • Go to Task Manager
  • Click on Performance
  • Go to Memory

You will find out RAM size, Number of Slots used, Form Factor, and moreover Speed of RAM.

PHYSICALLY

  • Open the battery.
  • Remove all screws.
  • Remove the back cover.
  • Check the RAM location, No of Slots, RAM types, etc.

 

Generally, a laptop motherboard has two RAM slots. One slot is used and another is empty.

Most of the motherboard supports maximum size up to 2 times of the company provided RAM. For example, if you bought a Laptop having 2GB RAM, You can easily upgrade to 4GB RAM.

 

 

RAM TYPES

RAM Type can be identified by the cut or groove location of RAM. Look at the pictures below and know your RAM type.

SPEED OF RAM

When you buy extra RAM for your laptop, make sure the speed of new RAM should be the same or more than the used one.

Suppose you already have 2133 MHz speed RAM installed in the Laptop. You should buy the RAM of 2133MHz or more. If you install lower speed RAM, For example, old RAM having 2133MHz and new RAM having 1800MHz speed, your laptop will work at 1800MHz.
So always buy the extra RAM with same or more speed.

the extra RAM should have the same size, same form factor, same or more speed, same type to double the RAM size of the Laptop

 

Here is an illustrative video tutorial which shows how to upgrade RAM size from 4GB to 8GB in Hp laptop. Watch and learn.

Lenovo K4 Note Display Replacement Guide

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Here is the article about the complete guideline for Lenovo Vibe K4 Note display replacement. It will help you to change the cracked or damaged screen of Lenovo K4 Note. You can change it by yourself and save your money.

If you are a Mobile Technician, this will help you a lot.

You can learn not only the procedure of changing the display, but you can learn how to change the battery, Charging Board, complete dissembling of Lenovo K4 Note.

Here is the guide video. Watch and learn.

Redmi 3S Prime Charging Problem and Solutions

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You will learn how to find out the solutions for Xioami Redmi 3S Prime Charging Problem. It is also applicable to Redmi  3S model.

Let’s discuss step by step.

 

STEP-1

  • Check Charger condition. Use another one for confirmation. If not charging, proceed to Step-2.

 

STEP-2

  • Remove the back panel cover of Redmi 3S Prime. Be careful while removing back cover, because Finger-print sensor may be got damaged. If you don’t know how to open back-cover of Redmi 3S Prime, Click here to know the procedure.
  • Connect the charger and check the input voltage at the Charging connector using a multimeter. Voltage should be around 5V. Otherwise, proceed to Step-3.

 

STEP-3

  • If you don’t get voltage at Charging connector (CC)  or CC looks damaged, change the CC or the charging board.

  • If you get 5V at the positive point of CC and still charging not done, then proceed to step-4.

 

STEP-4

  • Check the ribbon which is connected between Mainboard and Charging board.
  • lf ribbon and its connectors are damaged, change it.

STEP-5

  • Check the continuity between the positive point of CC and the NPC (Non-polar Capacitor) shown in the following image.

On cold testing, multimeter reading should be 0 ohms in Continuity mode.

On hot testing, the value should be around 5V

  • If there is no continuity shown, make a jumper between the CC and the said NPC.

 

STEP-6

  • If you get 5V at the above said NPC and still not charging, then remove the NPC near Battery Connector (shown in the below image)

 

Check out an illustrativa video below. Don’t forget to share and subscribe to the Channel.

Honor 9 Lite Display Replacement Guide

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This article is about the complete guideline for Huawei Honor 9 Lite display replacement. It will help you to change the cracked or damaged screen. It will also help to replace the internal Battery of Huawei Honor 9 Lite. You can change it by yourself and save your money.

To buy the display with touch of  Huawei Honor 9 Lite, Click here

If you are a Mobile Technician, this will help you a lot. You can learn not only the procedure of changing the display, but you can learn how to change the battery, Charging Board, complete dissembling of Huawei Honor 9 Lite.

Step-1

Removing Sim Tray

  • Remove the sim tray with the help of sim ejector. Though removing sim tray is not necessary for screen replacement of Honor 9 Lite, it is always a good practice to remove sim tray while dissembling Mobile phones.

Step-2

Removing Back Cover

  • The back panel cover of Honor 9 Lite is made of glass and it is fixed by applying glue.
  • Apply heat on the back cover for 3 to 4 min with the use of Hot air blower or SMD machine or Separator machine. You can also use a Hair Dryer.
  • The glue becomes soften on applying heat.
  • Try to make a gap between the back panel and the main panel body by using any plastic pry tools or any sharp tools.
  • When the back panel completely separates, detach the fingerprint sensor flex.

Step-3

Removing the Battery

  • Remove the Battery Connector.
  • The battery is glue-attached with the mainframe of the mobile.
  • Blow hot air on the screen side of the mobile which helps to soften the battery glue.
  • Use the plastic pry tool to detach the battery from the mainframe.
  • Care must be taken not to deform or damage the battery. Be cautious while removing the battery as any punch or leak may cause to explode the battery.

Step-4

Removing the cracked or damaged Display

  • The display of Honor 9 Lite is glue-attached to the main body or mainframe.
  • Detach the display strip connector.
  • Apply heat on the display for 3 to 4 min with the use of Hot air blower or SMD machine or Separator machine. You can also use a Hair Dryer.
  • Make a gap between the display and the frame. Take your time and remove it slowly and patiently.

Step-5

Checking the New Display or Combo of Honor 9 Lite

  • Before installing the new display, first, check the new display whether it is working or not.
  • Remove the warranty tag and the screen guard after the display is OK.

Step-6

Installing the new Display or Combo

  • First, clean the old glue from the frame
  • Apply the glue on the sides of the frame and install the display.
  • Use Rubberband 0r adhesive tape to mount the display on the frame for the better result.

Step-7

Installing the Battery and Back Panel Cover

  • Install the battery
  • Connect the fingerprint sensor flex
  • Install the Back Panel Cover by using glue.

Switch on the mobile and recheck whether working perfectly or not. Wait for a minimum of 12 hours to dry the glue.

Hooray, Your Mobile is ready to use.

 

This video shows steps-by-steps guideline for Huawei Honor 9 Lite display replacement. Watch and learn.

Mobile Hard Reset and Its Benefits

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In this article, I will discuss about Mobile Phone Hard Reset and its benefits ? Hard reset is a simple process and every Mobile user should know how to hard-reset his/her Mobile.

When Should I Hard-Reset my Mobile?

You may hard-reset your Mobile, if

  1. You experience slow down mobile Operating Software.
  2. You want to delete all installed apps.
  3. You want to erase all user data.
  4. Mobile hangs frequently.
  5. You forget the user password, pattern lock. (In the higher versions of Android, it may not work)
  6. Your mobile is attacked by Malware.
  7. You want to sell your Mobile.

Before Hard-Reset, you must back up all your files such as contacts, Photos, Videos, and Documents.

How do I Perform Hard-Reset?

The procedure of Hard-reset varies from Brand to Brand.

  • Switch off your Mobile.
  • Press Volume Up Key + Home Key + Power Key

or  Volume Down Key + Home Key + Power Key

or  Volume Down Key + Volume Up Key + Power Key

or  Volume Up Key + Power key

or    Volume Down Key + Power key 

  • Keep pressing, until Boot Menu or Android logo appears.
  • You can scroll up and down by pressing Volume Up and Down Keys.
  • Select Wipe Data / Factory Reset.
  • Press Power key to command. It will take some time to reset your Mobile.
  • Now Reboot your Mobile.

For your convenience, I am illustrating a Hard-Reset of Samsung On Max in the following video.

 

Free Mobile Repairing Course: A to Z

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Are you interested in building a lucrative career in Mobile Repairing? Here, I am. This course is completely dedicated to the learners of Mobile Repairing Course.

This course is completely FREE.

I will teach you from basics to an advanced level where you can get both hardware and software knowledge.  This course is designed for New Students.

As you know, almost all type of people rich or poor use the mobile phone. And the number of users grows day by day. It is a never endind story. Gradually the technology will be advanced. You need to be upgraded, but the basic function of a mobile phone is same forever.

If you are passionate about to learn Mobile Repairing, you can learn in lakhs per month. There is a minimum profit margin of ₹1000 in replacement of complete display of a mobile phone.

Today everybody users Screenguard (Tempered Glass) to protect the mobile phone. Do you know the actual cost of Tempered Glass. It is only ₹10. How much do a custemer pay for Temper Glass? You can easily earn ₹90 per Tempered Glass. This is just an example.

So here you can learn from basics to an advanced level with very simple language.

Yes, it is free

GLIMPSE OF THE COURSE :

  1. INTRODUCTION OF THE COURSE
  2. BASIC KNOWLEDGE OF ELECTRONIC COMPONENTS
  3. WORKING PRINCIPLE OF MOBILE PHONE
  4. EQUIPMENT NEEDED FOR MOBILE REPAIRING
  5. DISASSEMBLY OF MOBILES
  6. IDENTIFICATION OF ELECTRONIC COMPONENTS
  7. DIFFERENT SECTIONS IN MOBILE
  8. WORKING PRINCIPLE OF MOBILE NETWORK SECTION
  9. WORKING PRINCIPLE OF MOBILE POWER SECTION
  10. WORKING PRINCE OF MOBILE AUDIO SECTION
  11. USE OF MULTIMETER
  12. HOW TO CHECK PARTS IN MOBILE
  13. HALF-SHORTING AND FULL SHORTING
  14. BOOSTING OF BATTERY
  15. DIFFERENT TYPES OF PROBLEMS AND THEIR SOLUTIONS
  16. MOBILE DISPLAY SECTION- WORKING, FAULTS, AND SOLUTION
  17. DISPLAY REPLACEMENT TECHNIQUES
  18. DEAD MOBILE REPAIRING
  19. SOFTWARE RELATED PROBLEMS AND SOLUTIONS
  20. MOBILE STUCK ON LOGO SOLUTION

All the above-said courses are coming soon.