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yx

Joined: 2021-11-01
Articles: 558

Laptop Repair Guide

Lenovo ThinPad E430 notebook does not trigger repair

Lenovo ThinPad E430 notebook does not trigger repair After finding the corresponding LM339, it was found that the two-pin resistor was seriously corroded, so a 10K resistor was replaced. Test run, ACIN has been sent out, power on and start…

yx
2023-02-01

Laptop Repair Guide

Repair of Raytheon TR-G150T Notebook for “Bone Scraping and Healing” without Booting

Opening the drawing, it was found that VDD3 at one end of PR435 was broken. Isolate the protection tube PQ47 PQ18, and directly connect the DS pin of PQ30 pin to make them completely conductive.

yx
2023-01-31

Laptop Repair Guide

ASUS FX86F notebook can’t be started for repair

Asustek FX86F notebook can't be turned on. In this case, the damage of C9404 is a common problem. After repeated confirmation, it is the problem of APW8715 chip. Replace the good chip, power on and test it, and turn it on perfectly.

yx
2023-01-30

Laptop Repair Guide

Repair of HP TPN-I133 Pulling Adapter Laptop Screen Crash

HP TPN-I133 unplugged the adapter, the notebook screen crashed, and the motherboard was removed. It was observed that a resistor on the motherboard was moldy, the board was washed with water, the power supply circuit of the memory was normal, and the battery used for the adapter was normal.

yx
2023-01-29

Laptop Repair Guide

Asus S5300F notebook is not turned on for repair

Asus S5300F notebook is not turned on for repair Machine model: ASUS S5300F notebook Main board number: X530FN 2.2 Fault symptom: the notebook does not turn on. Maintenance process: An ASUS S5300F notebook, which was disassembled by itself, caused the…

yx
2023-01-12

Laptop Repair Guide

Apple MacBook Pro A2338 notebook can be repaired when it enters water

UP700 1-pin power supply is normal, 2-pin power supply is normal, 5-pin power supply is not output, and the measurement is not short-circuited. Connect it directly. Start the test, the screen display is normal, troubleshooting, and maintenance is over.

yx
2022-12-29

Laptop Repair Guide

It is not a common fault that Lenovo Y7000 notebook can not be powered by CPU when it is not turned on

After checking the drawings and measuring, it was found that the south bridge was damaged, and the return signal from the south bridge to the CPU was not processed, which led to the failure of the CPU power supply. The south bridge was replaced, and the power supply came out. Installation, startup test, perfect lighting, troubleshooting, and maintenance are over

yx
2022-12-28

Blog

Alien M17 notebook does not respond to repair when it is turned on

The external resistance of pin 5 CS2 of the control chip TPS51225 of 3VALW is changed to 10K, but the fault wave pattern remains unchanged. After replacement, power-on test is conducted, and the machine is normally turned on for display, troubleshooting and perfect repair.

yx
2022-12-27

Laptop Repair Guide

Asus VM510L notebook maintenance without charging

Asus VM510L notebook does not charge, magnifying glass observes that one end of PR8815 resistor link PR8814 is corroded, and the voltage is normal after adding some solder, so replace it with a good PR8814. Bare-metal test starts charging for 20 minutes, everything is normal, troubleshooting, and maintenance is over.

yx
2022-12-23

Laptop Repair Guide

Lenovo ThinkPad T460 notebook is not charged and its screen flashes for repair

Lenovo ThinkPad T460 notebook is not charged and its screen flashes for repair Lenovo ThinkPad T460 notebook doesn’t charge, and its screen flashes. Check the back end of PR49 to find DOCK_CONSUMP, which has a resistance value of more than…

yx
2022-12-22