Apple MacBook Pro 13 M1 820-02020-A boardview 820-02020 V1.0 Boardview
Apple MacBook Pro 13 M1 Late 2020 A2338 820-02020 T668 MLB
Apple MacBook Pro 13 M1 Late 2020 A2338 820-02020 T668 MLB Physical scanning image
Apple MacBook Pro 13 M1 Late 2020 A2338 820-02020 T668 MLB Location map...

Goes to recovery when plugged in with another Mac, shows in finder with a question mark and serial number. When revived fails at error 9 (the laptop turns off and on?) In the Apple Configurator when in dfu, gives error restores device removed before restore completed 0xFAA (4010). Tried in intel and m1 based Macs.
History, came in with severe liquid damage and bubbly motherboard Transplanted t2/ recalled ram, u4730, all 4 nands and u4770.
Below is the log from console, the usb meter negotiates at 19v and goes as high as 2.4A


Apr 1 08:36:25 macs-MBP UARPUpdaterServiceDisplay[1440]:...

Apple MacBook Pro A1425 Retina A1425 820-3462-A Schematic & Board View...

Apple MacBook Pro 13'' Retina A1425 820-3190 Schematic...

I have changes the keyboard and the touch id. on 14 inch Apple M1 A2442,
"option stuck "

It did not help because the lady was playing intensive games on the laptop : The issue with the Option (Alt) key is related to the Mac’s HID system (Human Interface Device), which manages how macOS receives input from the internal keyboard.

The Option key is not physically stuck. Due to intensive use of the Option key during gaming, the internal keyboard sometimes sends an incomplete input signal, causing macOS to think the Option key is still being pressed....