dead screen. but works on external
hi i have a faulty imac 27
the mac powers up ok and works on a external display useing the mini port.
however the lcd it totaly black i have used a flashlight but cant see anythink totaly black i have replaced the invertor board but it did not cure fault.
i have noticed theres 3 leds are on on the logic board.
Is dit een goede vraag?