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  1. Replies
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    269

    Re: PM_SLP_S4_l only 1.5v

    Old post but only just got round to looking at this again after a very busy spell.

    Replaced the SMC again and it fired up no problems. So it was the SMC after-all that was giving PM_SLP_S4 1.5v
    ...
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    82

    Re: 820-3462 very Slow Boot to IOS

    After ultrasonic everything working fine. BTW I do replaced U7400, R7402 and 7403 case closed.
  3. 820-2610 keyboard backlight trolling me, got it fixed

    Just had an interesting one, got a 820-2610 board from 17'' MacBook Pro. I think all Unibody MacBooks share the same circuit, so it should apply to all of them :)

    When I put the machine back...
  4. Re: 820-3115 no LCD detected, missing LCD_IG_PWR_EN

    Anyways, I think I don't even need to clean the ME region. I was able to install Sierra and then I installed a security update that also updated the EFI. Now I can boot into ASD OS without problems...
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    820-00165 Missing PM_SLP_S4_L

    I am working on the a MBA 13 2017 no signs of water damages. First has no green lights on the MagSafe charger I replaced the SMC I have a green light but missing PM_SLP_S4_L. I measured voltage on...
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    231

    Re: 820-00875 keyboard and trackpad

    i've replaced a fuse and a cap on the trackpad and now everything functions
  7. Re: 820-3437 Fan spins, no chime, no video, no PLT_RESET_L

    All voltages present?

    What is the resistance on PLT_RESET_L to ground?

    These boards usually do 3 fan on/off cycles before they turn on. But if the board has the original EFI/BIOS revision and...
  8. 2011 MacBook Pro 15''/17'' GPU disable with no HW mods

    Hi, I just wanted to tell you that there is new way of permanently disabling the eGPU on these machines, done by simply reprogramming the gMUX. Of course you would need a ROM file and a custom...
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    Re: 820-00165 pm_slp_sus_l is missing

    a little reflow on the chipset and it's back in business
  10. Re: 820-3023-A Macbook Air 13" 2011 i5 1,7 Fan starts ant stops

    Hi all, sorry to up a long time post, but today I have exactly same board, and exactly same problem, so doing a search I came back on this thread

    after stupidly changing the same pieces as before...
  11. Re: MBP-15" Retina Late 2013 820-3662-A Fan Spin w/ PPVCC_S0_CPU no Chime

    I found the errors wasn't due to the logic board problem, but an incorrect date settings after replaced the bios chips was set to the Factory default setting when was manufactured. The PRAM and SMC...
  12. Re: 820-00165 green light, no fan spin, no ALL_SYS_PWRGD

    I thought I would update this post as it may help others.The Macbook is now completely fixed and the inbuilt diagnostics shows up no errors.
    Having used HMonitor to get the sensor and voltage...
  13. Replies
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    333

    Re: 820-3437 sleep issue

    SMC issue. Reballed, all good.
  14. Keyboard and Trackpad not working once OSx loads

    I thought I would share my experience with this 820-00165 Logicboard.

    Originally it came in with a problem on start-up. It would just continuously start and then stop, like the 820-3437.

    I...
  15. Replies
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    Re: 820-3332 not booting (start up loop)

    Solved!

    OK, just to inform you about what I did to help some guys with same problems out.
    Yes, like I said the EFI chip was clearly messed up by the customer. In my case there was no way to only...
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    312

    820-2936 intermittent green light

    This one took more of my time than it should have.
    I got green light when I plugged in the power supply.
    When I disconnect it, and reconnect, the green light was gone.
    If I leave it alone for a...
  17. Replies
    3
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    408

    Re: 820-4924 PP18V5_DCIN 3v

    Right found the problem and this could help other people who run into the same problem.

    The magsafe initially sends out 3v to the board and you need to have R7012 68k resistor for the magsafe to...
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    266,413

    Sticky: Re: Apple Service Diagnostic files "ASD" Vault

    [Only Registered And Activated Users Can See Links] New link guys, not sure if...
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    377

    Re: 820-00239 not charging

    Short on pp3v3_g3h
  20. Replies
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    409

    820-00164 Quarter Fan Spin

    Just some info to help people with Quarter Fan Spin.

    I had a 820-00164 heavily liquid damaged around the U7501 with corroded components and damaged tracks and around the SMC again corroded...
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    375

    Re: 820-2850-a three beeps

    a reflow of the cpu with some rma flux and it's back in business
  22. Replies
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    352

    Re: 820-2915-a no chime

    it was a bios issue
  23. 820-4924 not seeing SSD, no liquid damage, all measures on connector perfect SOLVED

    for anyone who may google this down the road, I had an 820-4924 that wouldn't see the SSD. VDH002 error, SSD would get hot, no sign of liquid damage, and would boot off USB no problem. the issue...
  24. Re: 820-3476-A PPBUS_G3H 12.28V, green light, no amber light, no start

    FINALLY SOLVED:

    C5101 went bad!!!
  25. Re: 820-2850 screen freezes when switching to IG

    Solved!
    It was a bad MUX (U9600) chip!
    Upon further testing, I also found the U9320 had some broken balls and needed a reflow.
    It is currently still testing, but for now all looks like this would...
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