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Hi i have a 2005 imac g5 20inch isight EMC 2082 the problem i have is that only 1 and 2 LEDs come on i can see one capacitor slightly bulging at the top , my problem is that there is a heat sink with four pop out screw like rivets when these are removed i still can not budge the heat sink is there any one who can help me please? i can only replace the capacitor if this heat sink is removed Update thank you to everyone who tried to help i have sorted it out thank you very much the heatsink is sitting on top of kodiak IBM chip after a few wiggles it off and now i can access the capacitor

Follow this guide (you have an Apple Model No: A1145 (EMC 2082)) The entire logic board has to come out of the machine. If this Answer is helpful please remember to return and mark it Accepted.