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Clean board, fan spins fast right before it reboots this happens after 2-5 minutes of it being turn on. Installed clean OS after T2 restore, same problem and it was very difficult to install OS since it will error out, only completed installation after several tries. Installed new NANDs and...

Board had some corrosion around the edges, I replaced all 4 CD3215 from donor and also replaced UB090 as well as U2800 with correct firmware, but one of the ports loops every 20 seconds, not sure where to start. All LDO present Also replaced the ISL9240

Board had some liquid damage around WiFi IC, that is now fixed but 3v3_S5 and 5v_S5 jump all over, PPBUS 13V board alone takes 20V and around 0.040A

First time I get a 820-02188 here, clean board, tested with different original charger and same thing. I dont even know where to start with this boards, but charger and board alone gives me no voltage anywhere, I then located what I think it is ppbus line and started there with 4V, 8V then 12V...

Board had very very little corrosion in one corner of UG400 I replaced that and still same, DFU restore results in error 21. PPBUS_AON - 12.0V PP3v8_AON - 3.8V PP5v_S2_MAIN - 5.2V PP3v3_S2 - 3.2V PP1V8_S2SW - 0V PP1V2_S2 - 1.2V PP1V2_AWAKE - comes up to 1.2V for a few seconds then drops to 0...

Clean board had both U2890 and UB090 bad, also short on U2800 as well as U3200 and U3100, total mess, came in with 5V, now it makes it to 20V but wont charge or restore. All Awake and SLPS2R signals present, following boot sequence it makes it all the way to PMU_COLD_RESET_L and missing voltages...

Clean board, makes it to 20V but not 5 seconds later goes back to 5V then repeats. Checked for shorts everywhere and found nothing, checked with thermal camera but there is nothing obvius. PPBUS makes it to 12.2V then drops.

Board had issues with U2890 and UB090 and was stuck in 20V, fixed that and now I get to 20V but no power and no detection in DFU. SSD power is missing. PMU seems to be working fine. SLPS2R and Awake signals ok but PP1V2_AWAKE_SOC_PLLSOC_F is 0.7V not sure on that one, diode read OK.

Clean board, battery is recognized in OS, stays at 1% and OS said battery is not charging, runs from battery only. Tried different known good battery and flex and same thing. Tried different charger same thing. SYS_DETECT_L 0V SYS_DETECT 3.3V Diode readings on J6951 are fine. Board alone...

Clean board already restored T2 and reinstalled OS. The problem happens a few times per day, when the Mac is shutdown and powered back on the panic appears showing GPU panic Failed Power Play Resume as part of the string, other than this the Mac works fine per our testing.

Clean board. Already reballed SMC as it looked like it had some corrosion but it was pretty clean. PPBUS_G3H -> 8,56V PPVRTC_G3H -> 3,3V ALL_SYS_PWRGD -> 0V PP5V_S5 -> 5V PP3V3_S5 -> 3,3V PP3V3_SUS -> 3,3V When I Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L (at same time), But...

Board came in with shorted NAND, after replacement all went well and Mac works, but only powers on when power adapter is connected, if the Mac is shut down it wont power on unless power adapter is plugged in, after power on the adapter can be disconnected and Mac still works fine, it also...

Board had some corrosion around PM U7800 and U7210 after UC I now get all the way to PMU_ONOFF_L following the power sequence after that I dont get any other voltages like PP3V3_S5, PP1V8_S5, PCH_PWRBTN_L, but before that all other voltages are present like all the SLPS2R and AWAKE signals, SSDs...

This board came dead, clean board Found a short on PP12V_G3H_P3V42 (C7806) but even after fixing that I had no power Replaced Q7950, Q7970, U7950 and U7970 board now turns on sometimes but LED 1 is off, 2-3-4 are on when iMac is assembled but sometimes it wont turn on. When board boots...

Clean board no history. PPBUS_G3H: 12.54v PP3V42_G3H: 3.4v PP5V_S5: 5v PP5V_S4: 0v PP3V3_S5: 3.3v PP3V3_S4: 0v PP3V3_SUS: 3.3v PP1V05_SUS: 1.05v Original 85W Magsafe 2 charger When I trigger SMC_ONOFF_L and there is a drop pulse at PM_PWRBTN_L, cant check pulse on PM_SLP_S4_L because it...

Board had some water damage. After UC replaced most resistors around U1950 and also U1950 same thing. PPBUS_G3H -> 8,56V PPVRTC_G3H -> 3,3V ALL_SYS_PWRGD -> 0V PP5V_S5 -> 5V PP3V3_S5 -> 3,3V PP3V3_SUS -> 3,3V When I Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L (at same time) I...

Board came in with a short on PP5V_S3 U7200, replaced it 2 times just in case, short gone and now board makes it to PP5V_S3 with 0V and about 5 seconds later it pulses to 5V, most other rails also pulse, board is pretty clean otherwise. SMC, U7400, U6100 (With Clean BIOS) replaced but same...

Board came in with all 4 CD3215 shorted to ground. Replaced all 4 with donor ones and now I get 20V only with battery connected but no charging. All LDOs present in all 4 ports. Without battery board takes 5V and around 0.080A and none of them are cycling power. U2890 and UB090 are working...

Clean board, trackpad/keyboard don't work either before or after OS loads, already tried known good trackpad/flex/keyboard even tested it on a different case and same thing. External mouse and keyboard does work fine Alt key doesnt work so no boot menu but even before boot there is no trackpad...

Clean board already tested in known working case and same problem even with restored T2 and clean install of macOS. Sometimes shows folder icon, sometimes shows prohibited icon sometimes it gets all the way to the login screen but as soon as the password is imputed and hit enter the Mac...