Category Smartphone & Pad Repair Guide

Smartphone & Pad Repair Guide

Smartphone & Pad Repair Guide

Heavy Samsung W2020 folding screen mobile phone without charging repair

Exclude tail plug and tail plug flat cable. Measure the resistance of 5VUSB channel, and fly the wire to the input of charging IC.

zll
2022-12-01

Smartphone & Pad Repair Guide

IPhone 12 Pro Max cannot be started for repair

IPhone 12 Pro Max cannot be started for repair Machine model: iPhone12 Pro Max Symptom: The phone cannot be switched on Maintenance process: A faulty iPhone 12 Pro Max machine was received. The fault description is that the phone can’t…

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2022-11-30

Smartphone & Pad Repair Guide

IPhone XS Max phone screen intermittently does not show repair

First, replace the screen. After replacement, the fault remains the same. Check the PCB wiring position through the wiring diagram of Xinzhi Manufacturing Board Layer. Scrape the PCB board, reconnect the lead of PMU_TO_DISPLAY_RESET_CONN_L, and repair the fault.

zll
2022-11-29

Smartphone & Pad Repair Guide

IPhone 12 Pro max phone is not turned on for repair

According to the point bitmap, measure the battery connecting seat position and find that the battery seat position is short-circuited; It was found that a capacitor next to the CPU on the B side of the upper layer was short-circuited. After replacing the capacitor, the fault was repaired.

zll
2022-11-26

Smartphone & Pad Repair Guide

Huawei’s glory X10 can be charged when it is turned off, but not when it is turned on

Follow the foot of CC1, we will measure the foot corresponding to the small board seat, and then find out if there is a ground diode connected to it on the small board.

zll
2022-11-25

Smartphone & Pad Repair Guide

Redmi K30 suddenly crashes in use, and it is not started for maintenance after restart

When the mobile phone is turned on, the flower screen is found. Due to the universal tin-planting steel mesh, the CPU is removed again, and several spots are found to be soldered. After reinstalling the CPU, the mobile phone is turned on normally, and all functions are tested normally. The maintenance is over here!

zll
2022-11-22

Smartphone & Pad Repair Guide

HUAWEi Mate 20 Pro restarts automatically from time to time

HUAWEi Mate 20 Pro restarts automatically from time to time, and the CPU has a common fault of virtual welding. The fault is repaired after the CPU is redone.