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Category Laptop Repair Guide

Laptop Repair Guide

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

Laptop Repair Guide

Second apple MacBook Pro A1706 notebook is not powered on and charged

U3200 is removed, and the failure is still the same. The waveform returned to normal after u3100 was removed. Change two directly. The startup current is completely normal, the fault is eliminated, and the maintenance is over.

yx
2022-11-23

Laptop Repair Guide

ASUS GL553VD notebook with graphics card driver will be repaired with black screen

Test B0 channel video memory error exception. Disassemble and replace a single 512M memory chip of Magnesia. Run full load with MODS again, make sure there are no hidden faults in other video memories, run MODS test, and the test results are all PASS. When the machine is installed, the driver is automatically installed. Troubleshooting, the maintenance is over.

yx
2022-11-22

Laptop Repair Guide

Second, fix ASUS X450V notebook headset speaker without sound

When the chip is disassembled, the resistance value of 27 pins is infinite, and the resistance value of the installed chip is 638, indicating that there is no problem with the board layer. Replace the fifth chip, change the installation method, heat and weld from the bottom, the quasi-voltage comes out, the sound is there, and the headphone sound is there!

yx
2022-11-21