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  1. brunomotter

    820-00281 Has 20V No Power

    Hello. Got this one from another store and who knows what have been done to it. U3200 was bad and so were C3508 and C3509 and board was obviously not negotiating 20V. When I plugged in charger it sucked 1.5Amps from charger and immediately shut down in loop. Replaced those components and now I...
  2. brunomotter

    820-00840 No Post

    Understood. Your wish is an order sir LOL. Will return this crap to the owner. Thanks.
  3. brunomotter

    820-00840 No Post

    PLT_RST_L - 3.342V
  4. brunomotter

    820-00840 No Post

    No USB activity. L7210 is 0.972V and L7220 is 0.962V
  5. brunomotter

    820-00840 No Post

    Hello. Got this board here. It's on S0 state, trackpad clicks and CPU gets hot. It pulls 550mA from charger but no post. I tried first disconnecting screen as the internal flex was poked by someone who claimed to have fixed it(?!?!?!). Tried on external display without internal screen connected...
  6. brunomotter

    M1 MacBook Air True Tone after screen replacement

    Nope. Mac screens are different. If you get a True Tone one it will work, if you get a non True Tone one it won't work, simple as that. No need to reprogram.
  7. brunomotter

    820-01041 2 Lines Shorted

    It gets recognized in DFU, but does not complete either revive or restore. Diode mode on L9080 is 0.002,AKA full short
  8. brunomotter

    820-01041 2 Lines Shorted

    Hello. Got this board here. Lots of seawind corrosion on one of the edges. C9081 was shorted. Short cleared after removing it. I also have a short on C9087 line. Tried injecting voltage and U8800 gets very hot pulling 0.67A from PSU. If I plug in charger, board enters S0, stays "on" for some...
  9. brunomotter

    820-00426 KP during Boot

    Suspecting bad RAM here... I got errors like these on a MacBook Air some time ago and it turned to be a bad RAM module. But the problem is this piece of crap has 32 RAM modules and it's a no go to replace them all!
  10. brunomotter

    820-00426 KP during Boot

    No go with safe mode. Booting on windows live USB I get BSOD telling Stop Code: Driver IRQL No Less Or Equal What failed: ACPI.sys
  11. brunomotter

    820-00426 KP during Boot

    Hello. Got this board here. It gives a KP when booting. I booted into verbose and got it filmed to see where it was panicking. Apparently it's related to USB because on nanosecond line of verbose it says last loaded kext is IOUSBHostHIDDevice, which obviously is related to USB function. I tried...
  12. brunomotter

    820-00281 Speaker Amps

    Hello. Yes, full short to GND after removing the 3 chips I soldered.
  13. brunomotter

    820-3330 vs 820-3332 SMC

    Hello. I don't have any SMC chip for 3330 board, but I have plenty of 3332. 3330 is 15" 2012 non retina MacBook Pro and 3332 is 2012 retina 15" board. Have anyone ever tried swapping one with another and know if it could work? I know that SMCs should ALWAYS be from same board model, but who knows?
  14. brunomotter

    820-00840 No Power

    Flashed with known good BIOS. Now board keeps drawing continuously 325mA from PSU when connected and CPU gets warm. I have voltage on L7410/20/30 but still nothing on L7210/20
  15. brunomotter

    820-00840 No Power

    Tried SMC bypass. Machine turns on with fans maxed out but no chime, no video output and no POST. On SMC bypass I get 0.8V on L7410, L7420 and L7430 but still no voltage on L7210/20.
  16. brunomotter

    820-00840 No Power

    Just board on the desk with nothing but charger/ampmeter connected to it. Original 96W Apple Charger with original cable. Will try SMC bypass.
  17. brunomotter

    820-00840 No Power

    Hello. Got this board here with no power. 20V on charger. If I let it plugged off for some minutes, the first time I plug it in it negotiates 20V with charger and draws around 300mA for some seconds. When this happens I have 1.05V on L7370 but no voltage on L7220 or L7210. Then, after some...
  18. brunomotter

    820-00281 Speaker Amps

    Yes. Well, not yesterday, but before I ordered the missing chips the machine was more or less working. It worked well if I plugged in the charger and turned it on but, obviously there was no sound. If I tried to turn it on by battery power the machine would turn on but would never complete...
  19. brunomotter

    820-00281 Speaker Amps

    Well, I replaced the chips, verified for shorts before turning on, no shorts. When I plugged in the board I got smoke under PMIC. Probably this shit is gone now. Full short on ppbus_g3h
  20. brunomotter

    820-00281 Speaker Amps

    Hello! I got this board here which was poked by another store and came here missing U6400 and U6450. I ordered the chip to replace them but as it wasn't me who took the chips out I don't know exactly what orientation I should solder it. This chips do not have the traditional dot on it to mark...
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