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Category Smartphone & Pad Repair Guide

Smartphone & Pad Repair Guide

Smartphone & Pad Repair Guide

Huawei enjoys 20SE maintenance without turning on the water.

Huawei enjoys 20SE maintenance without turning on the water. By looking at the bitmap of Huawei Enjoy 20 SE motherboard in Xinzhizhuang software, it is found that there are many components and chips connected to the main power supply. The…

zll
2023-04-08

Smartphone & Pad Repair Guide

Black shark 3 can’t start the machine for repair

Eliminate the virtual soldering of CPU, handle the motherboard pad, plant tin for CPU and temporary storage, and then put it back to CPU and temporary storage in turn. Connect the power cord of the repair machine, and the starting current normally jumps above 1A.

zll
2023-04-07

Smartphone & Pad Repair Guide

repair of vivo S1 Pro mobile phone without charging

There are only two capacitors and one power supply on the 5V path. After disassembling the machine, the machine was burned, and it was found that none of them gave off heat, but the board gave off heat.

zll
2023-04-06

Smartphone & Pad Repair Guide

OPPO Reno6 enters the water without 4G signal repair

After disassembling the machine, no corrosion trace was found in the signal part on the front of the motherboard. The main power supply was above and the 1.8V was below. The capacitor was seriously corroded, so the brush fell off and the resistance of the foot was disconnected, and the flying wire was borrowed for electricity.

zll
2023-04-05

Blog, Smartphone & Pad Repair Guide

IPhone 11 Pro mobile phone standby power consumption fast repair

After testing, the mobile phone leaked 20mA when it was powered on, and it was found that one chip had broken corners by layers. Looking at the schematic diagram of Xinzhizhao software, it was found that it was powered by USB accessories, so a chip was replaced, and there was no leakage when it was powered on.

zll
2023-04-04

Smartphone & Pad Repair Guide

After Huawei Glory 9X mobile phone enters the water, WiFi can’t open the fault repair

There is a resistor corrosion on the motherboard, so directly remove the corrosion resistor and make a short circuit. After power-on test, the mobile phone WiFi can be turned on normally and the fault can be repaired.

zll
2023-04-03

Smartphone & Pad Repair Guide

OPPO R15 mobile phone does not display fault maintenance when it is turned on

Directly replace a good screen for testing, and find that the phone can be turned on normally, and the screen can display images, indicating that the original screen is damaged by water. Replace a new screen directly and fix the fault.

zll
2023-03-31

Smartphone & Pad Repair Guide

Repair of Huawei Mate Xs 5G folding screen mobile phone when it is not turned on

After replanting the CPU, the machine was turned on, and the fault remained, so the upper cover was replaced. The covers of Kirin 970, 980 and 990 are universal, and Huawei Mate XS has only one configuration, 8G+512, so find an 8G cover of Kirin 980 to install. The boot is normal and the fault is repaired.

yx
2023-03-29

Smartphone & Pad Repair Guide

Repair of Huawei P30 mobile phone without charging

When measuring the related power supply of the charging chip, it is found that the AVDD voltage of the G8 pin is 3.9V, which is a little higher than the normal 3.3V.. After removal, it was found that the capacitor pad was dropped, and the flying wire was directly grounded.

zll
2023-03-28