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  1. G

    820-3536-a wont turn on

    I do have a multi meter without auto ranging, ill try to find it
  2. G

    820-3536-a wont turn on

    I used the frequency setting on my multi meter and thats what it said; it is auto ranging
  3. G

    820-3536-a wont turn on

    is there any way i can check without an oscilloscope? i dont have one
  4. G

    820-3536-a wont turn on

    pin 12 is putting out 32.77khz
  5. G

    820-3536-a wont turn on

    ppbus is at 12.6v theres 3.34v at l7560 if theres 5v cycling at l7520 my meter just reads a steady 0
  6. G

    820-3536-a wont turn on

    okay i replaced c1910 and u1900 i now get 3.35 volts on ppvrtc_g3h board still doesnt power on; also still missing s4 power rails
  7. G

    820-3536-a wont turn on

    took off c1910 resistance to ground is now around 30m ohms
  8. G

    820-3536-a wont turn on

    I took u1900 off the board and got 2 ohms resistance to ground :/
  9. G

    820-3536-a wont turn on

    U1900 had pins 1-4 pretty corroded, pin 1 definiately the worst of them, getting anywhere from 3-8 ohms resistance to ground on ppvrtc
  10. G

    820-3536-a wont turn on

    I am getting 274 mv on ppvrtc_g3h
  11. G

    820-3536-a wont turn on

    the only resistor that i found that was not what the schematic said was r6131, resistance was 77k ohms but theres no resistor on the board there; and its also not labled "no stuff"
  12. G

    820-3536-a wont turn on

    The only area that seems to have bad traces are the probe points on the pins 1-4 side of u8330
  13. G

    820-3536-a wont turn on

    as far as i can tell pp5v_s4 isnt pulsing, but i dont have an oscilloscope. there was some blue along the 1-4 pin side of U1900 and the ground pin of U6100 had some aswell
  14. G

    820-3536-a wont turn on

    I have an 820-3536-a macbook pro retina, I get an amber light on the charger, but the computer wont turn on, I am missing pp5v_s4, pp5v_s5 is presant. board was water damaged, thanks for any help
  15. G

    [SOLVED]820-3437-b no backlight

    Yup replaced f7700 and i now have backlight. Thanks for the help!
  16. G

    [SOLVED]820-3437-b no backlight

    never mind, im an idiot the fuse must be bad, im getting over 8v on pin 1 of f7700 and 0 on pin 2
  17. G

    [SOLVED]820-3437-b no backlight

    0 on pin 6 0 on pin 5 0 on 4 0 on 3 0 on 2 0 on 1
  18. G

    [SOLVED]820-3437-b no backlight

    3.34 on edp_bklt_en 3.47 on smc_lid
  19. G

    [SOLVED]820-3437-b no backlight

    basically 0
  20. G

    [SOLVED]820-3437-b no backlight

    .582 in diode mode from pin 2 r7731 to ground
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