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.
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