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  1. M

    PPBUS Short 820-00840

    Only injected around .7v the board didnt take anything more than that even for the first time. Coils ended up going down to 0 ohms after waiting a while. if cpu isnt dead wat should i do next
  2. M

    PPBUS Short 820-00840

    L74(10,20,30) all had less tha 1ohm to ground removed corresponding u74** and no short on ppbus anymore. Ppvccgt_s0g is shorted which i assume was responsible for the 3 coils. That line just goes to the cpu and some caps could it be a bad cpu?
  3. M

    PPBUS Short 820-00840

    What is considered a high side mosfet? how do i check if they are shorted and what do i compare big coils with
  4. M

    PPBUS Short 820-00840

    I have a 820-00840 board that has no power, originally customer said it was working and suddenly stopped after a restart, no liquid else than a bit on the ssd connector, put it through the ultra sonic and seems clean. pubs_g3h is shorted to ground with less than 1ohm to ground and shorted to...
  5. M

    820-3437-B Choppy Backlight adjustment

    Which ones do you use right now that work properly?
  6. M

    820-3437-B Choppy Backlight adjustment

    Ok just had another board like this a while back was just curious Thanks
  7. M

    820-3437-B Choppy Backlight adjustment

    Pram reset didnt do anything. its not too noticable but when holding the brighness up or down button its not as smooth as it should be not too much of a problem but just wondering. Its not letting me upload a gif its saying too large its around 3.7MB
  8. M

    820-3437-B Choppy Backlight adjustment

    I have a 820-3437-B works fine except when adjusting the backlight brightness it jumps from one brightness setting to the next. Its jerky/choppy vs being a smooth transition. I replaced the backlight chip and no change.
  9. M

    Cpu voltage present but no chime/boot

    I think I'm going to leave this for now until i get time to do that thank you
  10. M

    Cpu voltage present but no chime/boot

    Cant remember liquid it has been cleaned but there were bad components near u5620, replaced them and the chip, no change, no signs of corrosion I've went over the board a few times. Its been left on a shelf with some other boards for probably a month or 2
  11. M

    Cpu voltage present but no chime/boot

    looks like i had r7102 on the board removed it and r5100 was bad replaced and got green light same problem still no chime/boot
  12. M

    Cpu voltage present but no chime/boot

    Just tried new bios and same thing. I had a file that had clean ME and programmed it over the old one
  13. M

    Cpu voltage present but no chime/boot

    I used a file that had a clean ME and it booted and worked before this happend ( it used to get stuck loading) Im not too sure what you mean by checking SPI Bus series, if you mean the resistors near the bios like r6120 they all have the proper resistance and if you mean "is there continuity...
  14. M

    Cpu voltage present but no chime/boot

    I have an 820-00165-A board originally got stuck halfway through boot, replaced bios and it worked properly. After checking on it a few months later it now has PPVCC_S0_CPU at 1.8 but doesn't chime/boot and no image, cpu does get slightly warm, takes around 5.5 watts a little over 250mA.
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