Brand: Apple
Model: A1990
Board number: 820-01041


Problem: I am not an Apple kind of guy to start with. But I am quite experienced with motherboard repairs in general. So the laptop is stuck with 5v 0.250A and does not negotiate 20v. Same symptom on all 4 USB C ports. When charger is plugged the amps start at around 0.060 then go trough: 0.100 - 0.180 - 0.230 - 0.244 and stay like this. Laptop responds to the power button: once I hold it long enough current goes down to 0.060A and then up to previous levels.

Board clean, no liquid damage, no corrosion....

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]:...

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....

Hello.
Have this two Apple A1990 EMC3215 that starting to 5W and power off. Byt Thermocam i see that T2 ic is heating little too much right when consumption start to raise.
I dont find any short in coils for it and it looks like there are voltages

Any hint or bad T2 is common on this boards?