[Video Summary]
Hello, it's Gaogao!
This time, I'm going to repair a junk HP laptop.
I bought this computer because it wouldn't turn on. Will the repair be successful?
[Repair Contents]
The laptop I'm repairing is a junk HP laptop that won't turn on.
The CPU is a 10th generation Core i3, and SSD and memory are not included.
The appearance is clean, but the screws and rubber on the back are missing.
After booting, the screen brightness is unstable, and there is a problem with switching between power mode and battery mode.
[Investigation of the cause of the failure]
There is liquid (probably soy sauce) on the board.
The voltage of each coil is measured and the problematic MOSFET is identified.
The voltage becomes unstable due to a MOSFET failure.
[Repair Process]
The MOSFET is replaced to try to stabilize the voltage.
Failure of the battery controller chip is also discovered.
After replacing the parts, the operation is checked and the problem is solved.
[Results]
The unstable screen brightness and power mode switching problems are resolved.
Repair successful, the computer now starts up normally.
Thank you for watching!
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#junkrepair #computerrepair #HPlaptop #MOSFETreplacement #PCrepair #Gaogao