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L7410/20 on good board have 7 Ohms. I lifted both coils L7410/1 99 kOhm L7410/2 0.6 Ohm L7420/1 88 kOhm L7420/2 0.6 Ohm So looks like PPVCCGT_S0_CPU is shorted.

Cant find any liquid damage. Have 20V on charger it charge the battery. At the beginning after power button press there was no chime and after 2-3 minutes there was short max fan spin and the same issue in loop. Entered in DFU, tried restore and had error 10. PP2V5_NAND_SSD0/1 have correct...

Tried with known good BIOS is no luck. I replaced U7100 and all works fine now. Thank you for help.

L7900 1.2V L7960 0.97V L8050 1V L8000 1V L7270 0V L7220 0V L7210 0V L7410 0V L7420 0V L7430 0V L7700 1.05V Is there any chance U7410/20 etc are faulty even if they are not shorted to ground? Or U7100 is faulty?

Yes, there is no T2, forgot about how old is that board. PPVCC_S0_CPU and big coils have stable 0V, no spikes etc when charger connected

Found short on PPV5_USBC_T_PVVC. Replaced UB700 and now have 5.12V on PP5V_S4 No more loop from charger. Without battery stable 20V 0.09A PP5V0 5.11V PP3V_S0 3.35V PP1V8_S0 1.78V Wont go into DFU. When battery connected it take around 2A from charger. Any idea?

5V_S0 0.064 in diode mode Injected voltage and Q8209 gets warm. Replaced Q8209 one more time and now have 0.321 in diode mode on 5V_S0. 5V_S4 0.02 in diode mode Injected voltage and U7800 gets warm Replaced U7800 but still the same readings and it gets warm.

No liquid damaged. Found fried U8209, U7650 (P5VS4_SW had short and pad was fried), U8400 and there was short to ground on F7000/2. Then found U7600 was getting hot. All of that has been replaced. Short on PPBUS is gone and there was 5V from charger and then it switch 20V for split second...

Same issue with known good battery C7020 and C7023 have 3.2 ohm.

"What happens with charger alone (without battery connected)?" It works fine. Mosfet will heat up to around 60C-80C. When batt and charger connected the it is around 195C. "Run start diagnostic with charger and battery connected." No issues found.

MacBook works fine when powered by battery. When charger connected board get hot (battery is charging), fans on max and after minute or two it switch off. When charger connected mosfet get very hot - used thermal camera. So depends what port is connected then QB400, QB300, Q3100 or Q3200 gets...

Finally have "ok" from a client to do restore and same issue "Timeout Error"

Yes, I used SWK003. Tried to revive via Apple Configurator but just freeze. Tried via Finder and is stuck at "Waiting for Mac..." and then got error " Mac cant be updated, error 4042 which is Timeout Error.

Used correct CD3217 and the issue was the same. Flashed UB090 and got 20V and 0.10V L6961 was a little warm and there was 0.061 in diode mode. Removed L6961 and had correct diode mode valus on both pads. Soldered new L6961 and still have low diode mode, its not getting warm and have correct...

Not from exact model, waiting for delivery with donors. Will update as soon will use the same UB300 from the same logic board.

Small liquid damage on C9092, U8600, U9580. Three USB C ports have 5V 0.28A One have 5V 0.02A in cycles/loop. Found faulty DB529 but still same issue. Replaced CD3217 (UB300) and still the same issue. Any idea? When ccharger connected 'OK' ports only T2 get warm. PP2V5_NAND_SSD0/1 not shorted.

At 2V C6451 was getting a little warm. Replaced and all works fine - fixed :) Many thanks :)

No liquid damage. Removed F7000/1 and when connected charger have 12.27V on pad 1 of F7000. Pad 2 (PPBUS_G3H) is shorted to ground - 0.9 Ohm resistance to ground. Big coils: LA950 27.5 Ohm LA870 44 Ohm LA860 43.8 Ohm LA850 40.4 Ohm LA750 6.4 Ohm L7231 3.4 Ohm L7330 17.3 Ohm L7221 4.3 Ohm L7211...

No luck. Audio flex was not connected and I used PMU_ONOFF_L as power button to make sure board is turned off.

No, 0V