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  1. aurel476

    [SOLVED]820-2936 short to ground PPBUS_G3H

    i ordered psu I have checked all other rail no shorts, i i cleaned motherboard with ultrasonic, now no short to ppbus_g3, now i have 4V, any idea ?
  2. aurel476

    [SOLVED]820-2936 short to ground PPBUS_G3H

    i've not stabilized power supply for inject voltage, i will check all other rails if possible inject with battery 1,5v AAA ?
  3. aurel476

    [SOLVED]820-2936 short to ground PPBUS_G3H

    logic board liquid damage short to ground on PPBUS_G3H, I cleaned around smc and isl area (corrosion) how can i find this short ?
  4. aurel476

    [SOLVED]820-3437-B no power

    yes sorry pin8 of U1950 3,42V, find capacitors, resistors broken by corrosion solved thanks
  5. aurel476

    [SOLVED]820-3437-B no power

    Liquid damage, but clean by ultrasonic by customer, board seem clean Pin8 of U1650 3,42V U6100 clean
  6. aurel476

    [SOLVED]820-3437-B no power

    PP5V_S5 : 5V P5VS4RS3_EN_R on U7501 : 0V and pin 2 of U7501 P5VS4RS3 0V
  7. aurel476

    [SOLVED]820-3437-B no power

    L7520 0v, l7560 3,3v
  8. aurel476

    [SOLVED]820-3437-B no power

    Tried good know charger, IOboard, flat cable, no power no fan spin light green and after orange PP3V42_G3H 3,42v PPBUS_G3H 8,56v SMC_ONOFF_L 3,42V SMC_RESET_L 3,38V SMC_BC_ACOK 3,38V SMC_LID : 92,2Kohms
  9. aurel476

    [SOLVED] 820-2936-A No green Light {corrosion under SMC}

    yes smc_reset_L high corrosion under smc reballed, cleaning it's work solved thanks
  10. aurel476

    [SOLVED] 820-2936-A No green Light {corrosion under SMC}

    Another board with dark green light PP3V42_G3H 3,47V PPBUS_G3H 12,27V U7000 : SMC_BC_ACOK 0,6V Pin 17/18 3,2 Ohms Pin 27/28 20,4 Ohms SMC_BC_ACOK line high already replaced ISL Bad SMC clearly ?
  11. aurel476

    don't boot 820-2530

    Check C7771 0,3V ?
  12. aurel476

    [SOLVED]820-2567-A Power on not display not beep

    thanks for the advice solved
  13. aurel476

    [SOLVED]820-2567-A Power on not display not beep

    no other solution :/ for parts so, time lost if replaced mcp, What did you think ?
  14. aurel476

    [SOLVED]820-2567-A Power on not display not beep

    Any idea tried another bioschip same problem
  15. aurel476

    [SOLVED]820-2567-A Power on not display not beep

    yes tried bass speaker plugged in no beeps without ram
  16. aurel476

    [SOLVED]820-2567-A Power on not display not beep

    Tried good screen, magsafe baord,ram, charger same problem C7771 1,06V MCPCORES0_EN 3,29V
  17. aurel476

    Programming SMCs

    What is the jtag port just for flash efi rom there is no other function on it ? Curious about how apple factory program smc
  18. aurel476

    [SOLVED]820-3437-B No backlight, no power from battery

    yes backlight work without the flat cable, i replaced ioboard and flat cable all work solved thanks
  19. aurel476

    [SOLVED]820-3437-B No backlight, no power from battery

    i order io board and cable, what does it mean LID ?
  20. aurel476

    [SOLVED]820-3437-B No backlight, no power from battery

    SMC_LID 0,96V, 97 Kohms
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