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I just noticed that the CPU only gets warm when J6801 is connected. If J6801 connected i get 0.8v on CPU core coils. If J6801 is not connected i get: PPDCIN_G3H: 20.3v PP3V3_G3H: 3.3v PPVCC_S0_CPU: 0v

Hi, got an 820-01987 that turned off during use. CPU gets hot but no image, no Caps Lock light. U8250 was burned (no corrosion). Was replaced but i get no SENSOR_PWR_EN. Diode mode to ground is 0.750 PP3V3_G3H is 3.3v

backlight is always ON, the issue is no video

SMC_LID_LEFT, SMC_LID_RIGHT are both 3.4v

820-0281 LCD shuts off after a few seconds of booting the OS (backlight on but no video) During installation of OS it stays on. It also stays on on safemode Tried disconnecting everything except LCD, same issue. Tried reinstalling OS, no change. SMC_LID is 3.4v Board looks immaculate. Sometimes...

Removed J5250, no boot. Same "PP3V3_G3H is 3.3v but it pulses down to 2.4, 1.2 and 0.3v PPBUS_G3H is 0v"

PP3V3_G3H is 3.3v but it pulses down to 2.4, 1.2 and 0.3v PPBUS_G3H is 0v no signs of damage that i can see

Hi, got an 820-0281 that initially had no backlight when turning on with the battery connected. (on charger only it had backlight). J5250 was bad so i replaced it, not the machine is unresponsive. I get only 5v on PP20V_USBC_

It was Q7180. Thanks a lot

Already tried good working DC In board.

Hi, got an 820-4924 that doesnt charge from the 65w charger, only 85w (both OEM) and tested working in another machine. It charges ok with the 85W one, but the 65w charges intermitently. When not charging i get 0v on PP18V5_DCIN_FUSE.

Tried good BIOS, no change.

Did you check their continuity until U7400 pins? : Yes sir U7400 basic voltages: 46 = 5.0v 19 = 5.1v 47 = 3.3v 1 = 0.5v 48 = 0.6v

ALL_SYS_PWRGD stays high. R7402/3 are good and their traces/solders

Hi, got an 820-3115 that has fan spin, green light, but does not boot. PCH seems to be getting warm. PPBUS_G3H = 12.5v PP3V42_G3H = 3.4v PP5V_S5 = 5.1v PP5V_SUS = 5.1v PP5V_S3 = 5.1v PP5V_S0 = 5.1v PP3V3_S5 = 3.3v PP3V3_SUS = 3.3v PP3V3_S4 = 3.3v PP3V3_S3 = 3.3v PP3V3_S0 = 3.3v PP1V8_S0 = 1.8v...

PP1V8_S0SW_DFR, PP3V3_S0SW_DFR and PP5V_S0_T139 are all good. Tested on the connectors

Ive installed all OEM macOS that it supports, but the setup wont go past the critical error update.

The camera also doesnt work, possibly bad U3900?

Yes, tried good touchbar. No history. I installed Sonoma with OpenCore and the TB doesn't work (the touchbar itself is good). PP1V8_S0SW_DFR, PP3V3_S0SW_DFR and PP5V_S0_T139 are all good

Hi, got an 820-00928 that displays the following error message when setting up OS: "A critical software update is required for your Mac, but an error was encountered while installing this update. Your Mac can't be used until this update is installed". Then wont let me boot. Things ive tried...