3 iMac won't boot after teardown! Please Help!
I have never seen something like this in many years of repairing, diagnosing and building computers. Just had finished taking the mac apart, to clean the fans clogged with dust. Put everything back in place, pram battery as well, now the system won't boot. It will turn on, the fans are starting, 3 out of 4 leds on, but no chime or image on the screen and no image on an external screen either. I have tried pram and smc reset and it beeps if I will take the ram out. Please advise or it's going out the window.
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Have just finished taking it apart again and disconnecting the inverter again. No joy, no nothing. In the end I said, one more try..how about I'll put the 1GB bar of ram it came with? And the bloody thing works now. I am just speechless. My 14 years of computer repairs experience is going to the bin. PC2 5300 vs PC2 6400.
из Adrian