Redmi K40 automatic restart repair

Redmi K40 automatic restart repair.

Restarting this kind of fault is more common because the power-on key damaged the previous motherboard. The mobile phone has been disassembled before, so it can be easily disassembled. Observing the motherboard, it is found that the power-on cable is damaged.

Machine model: Redmi K40

Fault phenomenon: the mobile phone automatically restarts.

Maintenance process:

I got the phone and found that there was no electricity. After charging the phone, the phone can be turned on and then automatically restarted. Sometimes it is automatically restarted after entering the system and a shutdown interface appears.

Redmi K40 Automatic Restart Maintenance Figure 1

Redmi K40 Automatic Restart Maintenance Figure 2

Restarting this kind of fault is more common because the power-on key damaged the previous motherboard. The mobile phone has been disassembled before, so it can be easily disassembled. Observing the motherboard, it is found that the power-on cable is damaged.

Redmi K40 Automatic Restart Maintenance Figure 3

So I found a good boot cable to replace it.

Redmi K40 Automatic Restart Maintenance Figure 4

After replacing the boot cable, install it and start it for testing. After Redmi K40 enters the system, there will be no automatic restart of the shutdown page. Troubleshooting and maintenance are over.

Redmi K40 Automatic Restart Maintenance Figure 5