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Ok, thanks. And add the risk to broke the screen.

Have this iMac that only sometimes appears artefacts on screens. Somebody replaced GPU on these? Worth to try?

I replaced the board and same problem.

Oo, you mean some componnt react with the heat? This will be headache, yes.

With 0005 works well. I just replaced and all seems ok.

This board sometimes no power. If I reconect the battery it works again 1,2 days and then no power again. I need to reconect battery each time. Any idea? Battery charge, discharge correctly. Can see the % PPBUS with battery 8.42V

Is there any way to disable jack and enable internal speakers?

Yes, thats right. When plug external speakers all works and slider appear.

Have 2 imac 21.5 and 27 for gpu replacment. After that both without sound. Both chime and has sound on external speakers. Any idea?

I am looking for ssd reader on ebay, but cannot find nothing. Exist any ssd to usb reader? Air 2013-2017 models.

I removed the 0001 chip and now power. Should I place new chip to try?

Have iMac 21.5 with 216-0810001. Without GFX power and mouse is on. So I suspect GFX or chip problems. Can I put another GPU?

U5410 powered with 3.2V I run ASD test yes and this is the error. No more errors. Any idea?

ASD error: Motor is spinning slowly as it should

PPBUS at first 5 seg is ok at 12.56 and then goes low to 2V At 3V coil I have only 0.9V also only the first 5 sed. Already replaceed TPS51125 R do ground on 3V_S5 is 0.630 and 0.130 Any suspect?

11 macbook air are 2 models screens only? 2010-2012 and 2013-2015? I mean full assembly

I found corrosion arround Q5530. I replaced this and checked it goes to C5411 but still the same. I measure on C5411 and I have 3V and 0.5V in both pins. This is on the faulty board that run slowly. On another full working board I have 0.5V in both pins. Any hack I can do? Any idea how to solve...

I checked the power and has 11.8V When I conncet to 230€ first led turn on for 0.5 seg. and then off. Could be bad power board or motherboard problem? Any test I can do more? Board is 820-4668

216-0841000 = 216-0841027?

Without GPU the same. Board problem?