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  1. kevinklinkmuller

    820-0521 was dead with liquid damage, no post now

    This one had a little damage with r7679,r7678,r7677,r7671. replaced them all, can't see liquid damage anywhere else but it did have a short with C7676, replaced that too. Now the trackpad clicks so I guess it's kinda turning on but no post
  2. kevinklinkmuller

    820-01987 5V USB C, no liquid damage

    this one has 5V on amp meter, i already replaced the two CD chips, no difference PPBUS is 12.3v PP3v3_g3h_rtc is 0.8V though
  3. kevinklinkmuller

    820-01521 - stuck at 5v after plugged into external display

    This one had no liquid damage, but was plugged in and powered by an external monitor before it fried. I replaced one of the CD32 chips as nothing was coming up on amp meter on that one port. then i got the 5V back on that port. Just in case replaced both of them in case one was causing the no...
  4. kevinklinkmuller

    820-00165 no green light, no pp3v42

    Hi there! i feel silly for posting this but i'm a little rusty it seems. This should be a fairly basic issue but here we are No green light, no PP3v42, no short on PP3v42. I know Pp3v42 is required to enable green light, so the main DC in connection must be the issue? there was liquid damge...
  5. kevinklinkmuller

    820-4924 doesn't restart, needs power cut completely to turn back on

    hi there! this one had a lot of liquid damage on the SMC area. i have replaced that twice. I can confirm that the lid sensor was also damaged but i fixed that too. now the issue is when i try to restart, i have to cut power completely, unplug battery and DC and plug back in to turn on. if i...
  6. kevinklinkmuller

    820-00165 has backlight but no image

    small amounts of liquid damage in multiple areas. There is USB activity, chime is there, fans spin up when battery is disconnected as if it's booting. backlight is there. Tested with known good screen, nothing but backlight. Also it doesn't seem to turn off backlight if I close the lid. So...
  7. kevinklinkmuller

    820-00163 is on and working but turns off screen during startup

    It's as if the lid is closed, except during boot i can close the lid and open at it'll react properly. Once you see the mouse, the screen goes off. Works on HDMI perfectly. When unplugging HDMI it'll come up on the MacBook screen for a split second before shutting off again. It's not just...
  8. kevinklinkmuller

    820-01987 no life at all.no liquid damage.

    Nothing comes up on amp meter (doesn't even turn on) Checked for shorts on almost all big ish caps on the board, all good. Lines seem to have little to no voltage (hard to tell what lines they are without board view) Any common issues on these? I checked a new port already
  9. kevinklinkmuller

    820-3115 Green light, no fan spin

    Liquid damaged by the LVDS connecter. Can't see anything anywhere else. Already replaced u7000 and q7085 on U7000 Pin1 = 0v pin2 = 17.5v pin3 = 4.2v pin9 = 0v pin12 = 3.47v pin14= 3v pin 15 = 0.3v pin17 = 12.54v pin19 = 5v pin20= 5v pin27 = 17.5
  10. kevinklinkmuller

    820-00850 Liquid damaged u7000 area. 5V 0amp USB

    Hi there! This one had a badly damaged U7000 area. I didn't have this exact board in stock so I used a 820-00239 board instead. Replaced some of the components around it and also u7000 itself. I'm starting to realise that this u7000 might not be compatible with the 820-00850. Is that why it's...
  11. kevinklinkmuller

    820-01041 Short on U3000, short gone, booting but cannot find U3000

    Does anyone know where I can get a replacement from? Without having the whole board? I need one fast in the UK
  12. kevinklinkmuller

    2012 A1419 Core i7 iMac (trying to find board number) dead, suspected GPU

    Can someone tell me where to find the board number on this thing? any way, The thing does chime, no image on display. Plug in USB drive with flashing light at first then turns off, flashing reappears, then off. Removed display, LED 1 and two come on, 3 doesn't and 4 is off I assume because no...
  13. kevinklinkmuller

    820-3115 only works on fake charger. Green light slight flicker on original but no fan spin

    I have replaced both mosfets and the resisters next to them. That eventually gave me green light on the original charger too, but with a slight flicker. Works fully on fake charger. Also replaced ISL6259 PP3v42 is getting 3.48V
  14. kevinklinkmuller

    820-00165 Liquid damage on u7200, r7202 blown

    Have a bad feeling with with this MacBook Air. I have replaced both U7200 and r7200 and no luck. I'm weirdly getting 8.59 on ppbus. I know that this line is sensitive so im going to guess that even that is too high . Also I had to run a Jumper on pin 17.... Pin 16 looked toasty as well. Looks...
  15. kevinklinkmuller

    M1 MacBook Air True Tone after screen replacement

    Is that active by default or would it theoretically have to be programmed? Is there a chip I can transplant in this case?
  16. kevinklinkmuller

    820-00165 no power, no green light

    Hi there amigos I have a 00165 here with what I thought was going to be a basic no green light repair but it's turning into a rabbit hole. There was corrosion around SMC, no much. PPBUS_G3H is low at 8.16v PP3v42 is actually just consistently 3.41. SMC_RESET_L is on 3V Have replaced SMC. same...
  17. kevinklinkmuller

    820-00281 can't boot into external. Can't recognize devices for the 1st 5 mins after booting

    replaced all USB controllers. there seems to be some sort of delay with data connections to USB C. for the first 5 mins after the OS boots it doesn't react with external devices (but is able to charge) after 5 mins it's perfectly normal When trying to boot into external drive, it fails halfway...
  18. kevinklinkmuller

    820-3209 green light, no fan spin. ppbus low

    the current sensing resisters were toast as well as ISL6259 (short to ground on current sensing pins) R7005 was also high resistance. replaced all of this and all have the correct values now. PPbus is on 4.3 volts. the SMC SCL and SDA lines are both 3.42v I also replaced Q7080 with no change...
  19. kevinklinkmuller

    820-3662 only charging with fake charger

    hello there! have solved some issues on this already. mainly it was compeltely dead, no green light and no boot. has had water damage but im not sure if that was the cause, i have a feeling it was to do with a fake charger to begin with. anyway, to start with i replaced ISL 6259 and also both...
  20. kevinklinkmuller

    820-00165 blown c7372 (sorted) but now will only work without battery

    really odd one, as soon as i plug in the battery, it only comes on for a second and immediately turns off. fine with only DC power. my immediate thought was current sensing circuits but thats all ok
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