It is found that there is secondary power supply in front of R4001. After passing R4001, there is no power. If the resistance value of the measured resistor is good, C4023 will be short-circuited, replaced decisively and repaired.
Redmi Note 9 Pro touch screen failure, CPU virtual welding, CPU rework, fault repair.
Redmi note9 suddenly opened no booting, replaced the fault Capacitor, perfectly repaired.
Redmi note 8 Pro water damage does not take photos, and the flat cable and BTB connector are cleaned again and the fault is repaired.
Redmi Note 5mobile phoneno booting, remove the fault Capacitor, the fault is solved.
Redmi K20 calls to remind you to turn off flight mode. After scraping PCB layer,Jump wire fault is solved.
Redmi 10x mobile phone no booting, after compensating the resistance, it starts up normally and the fault is repaired.
Redmi k30 PromobileWon't Turn On, redo CPU fault repair.
Redmi mobile phone water damage screen malfunction,fingerprint seat and Camera BTB connector cleaning and installing fault repair.
