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Category Blog

Laptop Repair Guide

After Lenovo G40-30 fell, the notebook could not be turned on for repair

Replace the EC, and then measure 3V to the ground. Everything is normal. Power on for about 0.02, the external monitor tests that the current of about 0.36A has turned on the machine, and after installation, it turns on the machine for about 0.6A without plugging in the battery. Troubleshooting, the maintenance is over.

yx
2022-12-06

Desktop PC Repair Guide

Gigabyte GA-H77-DS3H black screen repair

Gigabyte GA-H77-DS3H turns on the black screen and brushes the BIOS fault contact.

lqy01
2022-12-05

Smartphone & Pad Repair Guide

Xiaomi 10 Pro mobile phone does not charge repair

It is found that the motherboard is burnt, and the resistance of USB 5V terminal is measured as 0. Cure the bone, scrape off the burned slab, and the resistance value comes back. Short circuit B3/A2 pin of Q5400, charging is normal, and the fault is repaired.

zll
2022-12-05

Laptop Repair Guide

Microsoft Surface Pro 5 notebook is not turned on for repair

Disassemble the machine and measure 3V3 short circuit; BIOS 8P 3.3 short circuit; 0 v short circuit, basically determine the CPU problem, go to BGA repair table, and remove the CPU. Weld new CPU. Go to BGA repair table and remove CPU. Welding new CPU

yx
2022-12-05

Laptop Repair Guide

Asus A456U notebook will not be started up for repair when water enters.

Asus A456U notebook will not be started up for repair when water enters. Machine model: ASUS A456U notebook Main board number: X456UQK 2.0 Fault phenomenon: the notebook does not boot when it is flooded. Maintenance process: Received an ASUS A456U…

yx
2022-12-02

Desktop PC Repair Guide

Mechanical Revolution deep-sea ghost Z3 flash screen repair

The mechanical revolution deep-sea ghost Z3 flash screen is directly connected to the fly power line. The machine no longer flashes, and the maintenance is over.

lqy01
2022-12-02

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

Blog

Heavy Samsung W2020 folding screen mobile phone without charging repair

Heavy Samsung W2020 folding screen mobile phone without charging maintenance Exclude tail plug and tail plug flat cable. Measure the resistance of 5VUSB channel, and fly the wire to the input of charging IC. Machine model: Samsung W2020 Malfunction: the…

yx
2022-12-01

Laptop Repair Guide

Lenovo ThinkPad P50 notebook is not turned on for repair

Lenovo ThinkPad P50 notebook is not turned on for repair. Machine model: Lenovo ThinkPad P50 notebook Main board number: NM-A451 Malfunction: The notebook does not boot. Maintenance process: Received a Lenovo ThinkPad P50 notebook computer, the fault description notebook does…

yx
2022-12-01