Glenn
New member
Have this Macbook air 820-3437 with no working keyboard and trackpad. board is light liquid damage.
Have tray a know good trackpad, keyboard and cable but still not working.
measurement on j4800:
Pin 19: 3,4V
Pin 14: 5,15V
Pin 10: 2,13V
R4830 2.09V and 0,1Ω diode mode give 0.367
Have test with a usb bluetooth mouse and that work
will test if it work when pressing down options button when startup.Nothing happens when pressing options button at startup just booting as normal.
Have tray a know good trackpad, keyboard and cable but still not working.
measurement on j4800:
Pin 19: 3,4V
Pin 14: 5,15V
Pin 10: 2,13V
R4830 2.09V and 0,1Ω diode mode give 0.367
Have test with a usb bluetooth mouse and that work
will test if it work when pressing down options button when startup.Nothing happens when pressing options button at startup just booting as normal.
Last edited: