romac90 Posted September 26, 2018 Share Posted September 26, 2018 (edited) Hello guys, I got two iMacs 21,5" Mid 2011 which shows the exact same curious error. I have dissassembled it to test some Graphics Cards and reassembled it again. After power is plugged in, its fans start automatically. First in normal speed and after maybe 15-20 seconds at FULL speed. The last of the 4 LEDs, from left to right is lighting up. I tried a few times to dis- and reassembly this iMacs with no changes. I tried also to put out the small battery out and in. One time, I reassembled it wrong. There are to 7 PIN sockets for HDD PWR and the other 7 PIN socket for camera and other things, I accidently put them wrong in, for one time. Maybe it is one reason? I don't know. Maybe someone can help out here. Greets Edited September 26, 2018 by romac90 Link to comment Share on other sites More sharing options...
STLVNUB Posted October 16, 2019 Share Posted October 16, 2019 (edited) Boy I didn't know they made a 21,5 I must have been asleep edit: Oh I see 21.5, that's better Edited October 16, 2019 by STLVNUB Link to comment Share on other sites More sharing options...
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