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directeuphorium

 
Member Since: Dec 24, 2009
Posts: 54
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directeuphorium is offline
hmmm, well i'm going to be honest this is REALLY close to what happened to the macbook pro i ended up getting for free.

when a display goes black it's usually one of three things.

#1. The inverter board is bad (the inverter is the board which sends power from the logic board to the LED/LCD backlight)

#2. The connection to the Inverter is loose.

#3. The backlight system is dying.

but it could also be a bad logic board


Can those imacs be hooked into an external monitor? If so can you hook it up to an external monitor and see if it can drive that. If it can, that rules out a bad logic board.
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