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Category Blog

Smartphone & Pad Repair Guide

How to solve the problem that Huawei P40 Pro is not turned on? Come and have a look

The second repair of Huawei P40 Pro did not start, and the peer described that the fault was still repaired repeatedly. After the repair by Xunwei maintenance master, it was found that the maintenance was not complicated, but a simple problem of tin connection. The specific maintenance process was as follows:

zll
2023-05-11

Laptop Repair Guide

Second repair Lenovo 16891-1 notebook does not boot.

Failure phenomenon: Before this notebook, the charging interface fuse burned. After short-circuiting the fuse, it charged normally. After lowering BAT_IN#, it worked normally. This time, the customer brought it again, saying that he would turn it off by himself when playing games.

yx
2023-05-11

Smartphone & Pad Repair Guide

The Schematic, Circuit Diagram PDF file for Samsung Galaxy Tab Pro 10.1 SM-T520 service manual

The Schematic, Circuit Diagram PDF file for Samsung Galaxy Tab Pro 10.1 SM-T520 service manual. File info Pages: 41 Format: PDF File Size: 3.54MB Schematic Preview Samsung Galaxy Tab Pro 10.1 SM-T520 service manual_0_split Download Download XinZhiZao maintenance software to…

zll
2023-05-10

Laptop Repair Guide

Repair of Common Problems in Booting Black Screen of ASUS X455L Notebook

Repair of Common Problems in Booting Black Screen of ASUS X455L Notebook Machine model: ASUS X455LD Main board number: X455LD RV2.1 Fault phenomenon: the notebook can be triggered, the boot screen is black and there is no display. Maintenance process:…

yx
2023-05-10

Smartphone & Pad Repair Guide

OPPO R9s Plus cannot be charged for repair

According to the drawing, the resistance between the two feet in the middle of the battery holder is 570, indicating that there is no short circuit, broken wire/virtual welding, and the measured battery voltage is about 3.7V V.

zll
2023-05-09

Laptop Repair Guide

Asus A541U notebook can’t be turned on for maintenance after it is flooded.

When the motherboard was removed, it was found that many parts of the motherboard under the corresponding keyboard had been corroded by water, which was more serious. There are two new situations, one is that the adapter of the regulated power supply head is not suitable, and the other is that the power-on key of this machine is integrated on the keyboard and cannot be removed, so temporary leads have to be welded on the motherboard.

yx
2023-05-08

Smartphone & Pad Repair Guide

Huawei tablet BAH3- W09 can’t connect to WiFi for repair

Open Xinzhizhao software, find a circuit reference of mobile phone motherboard using Hi1102V100, measure the power supply according to the schematic diagram, and replace a WiFi chip, and the fault remains.

zll
2023-05-08

Laptop Repair Guide

Lenovo T430s notebook can’t be started for repair

Lenovo T430s notebook can’t be started for repair Machine model: Lenovo T430s Main board number: LSN-4 UMA 11263-2 Fault phenomenon: The customer described that Lenovo T430s notebook could not be turned on when it was powered on. Lenovo T430s notebook can’t…

zll
2023-05-05

Blog, Smartphone & Pad Repair Guide

OPPO A35 can’t be recharged after water is injected.

Observing the motherboard after disassembling, the corrosion is not serious. When the battery is not installed, plug in the charger for the mobile phone, and measure that the positive voltage of the battery is only 1V, which is obviously low. After replacing the charging IC, the charging current returns to normal.

zll
2023-05-05