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Macbook 820-00426 no keyboard
- Thread starter No-Clean
- Start date
Did you try known good trackpad flex/board?
Be aware of chinese flex; I changed 3 to fix such problem one time.
Be aware of chinese flex; I changed 3 to fix such problem one time.
Still the same problem?
KB doesn't work in boot menu, nor macOS?
Inspect U4820/30 adjacent resistors, traces and solders.
Check voltage and diode mode to ground on their SCL/SDA lines.
Just in case, check SMC_LID.
Be sure J4801 is good.
KB doesn't work in boot menu, nor macOS?
Inspect U4820/30 adjacent resistors, traces and solders.
Check voltage and diode mode to ground on their SCL/SDA lines.
Just in case, check SMC_LID.
Be sure J4801 is good.
Change both U4820/30, just in case.
Use donor board, maintain the positions.
Use donor board, maintain the positions.