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Category Laptop Repair Guide

Laptop Repair Guide

Laptop Repair Guide

Lenovo Y430P notebook computer has no response to maintenance by pressing on the key

Save the file, and brush the programmer into UH52. Tweezers short-circuit JCOMS2 and JME1 jumper points to clear COMS, press the power-on key, and quickly boot into the system.

yx
2022-12-07

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

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

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

Laptop Repair Guide

Repair of DELL Vostro 5470 notebook adapter without power on or charging

Repair of DELL Vostro 5470 notebook adapter without power on or charging After dismantling Q32, it was found that the voltage was still 1.4V Keep looking for the next level circuit along the 3.3V_ALW_ON, and find PQ12. The air gun…

yx
2022-11-29

Laptop Repair Guide

The second repair of ASUS F552V notebook triggered power failure repair

The second repair of ASUS F552V notebook triggered power failure repair Machine model: ASUS F552V notebook Main board number: X550CL 2.1 Fault phenomenon: notebook triggers power failure. Maintenance process: An ASUS F552V notebook computer, which is a second repair machine.…

yx
2022-11-28

Laptop Repair Guide

Second, fix ASUS X55VD notebook, the internal screen is not displayed, and the external display is gray screen

Checked that the power supply of FDI and LVDS modules in Nanqiao is normal, and found problems when measuring the power supply of CRT module; The inductance and capacitance were replaced, the resistance value was restored, the screen test showed that the display was normal, and it was perfectly repaired.

yx
2022-11-25

Laptop Repair Guide

Dell inspiron 15 7559 notebook can’t be repaired without power on

Dismantling the machine, it was found that the positions of the two P tubes where the power supply 19V went in were burnt black, and the backs were also black, especially the resistor of PR61 2R2 patch was cracked. Power-on test, measuring that the 12-pin 19V of the standby chip PU16 has passed. Press the switch line to trigger, indicating that it is repaired, installed and tested, and the machine is turned on perfectly.

yx
2022-11-24