iMac late 2009 Black Death screen
I have 21.5” iMac late 2009 model 1311. When I bought it it was with incomplete os installed till disk utility.
1 Internal display Was work
2 external display was work
3 usb bootable
but facing 3 problems
1 dead pram battery
2 late start button response
3 Mac hdd show multiple error message while OS X installation.
after replacing same model number pram battery.
1 Display stop working. Internal & external.
2 usb bootable stop working.
3 I replaced new display lcd cable, pram battery & vertice synchronised cable.
4 mac hdd showing multiple errors that is why I make partition through trans MAC software through windows.
5 tried new hdd also
6 try prm reset, safe mode, options to boot, bootable, external display, another Mac OS clone via usb hdd, f1 f2 brightness, heat sink for processor & graphic card, almost everything.
1 Imac work
2 start sound & chimp sound work
3 fan work
3 led diagnostic light work
4 No display
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