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Solved
Imac replacement screen not working
Posted on 2016-09-06
Guys,
I have an Imac that appeared to have a bad screen. I changed out the screen and still no video. I can plug an external monitor up to the thunderbolt port and get video on an external monitor fine. Any suggestions?
I have an Imac that appeared to have a bad screen. I changed out the screen and still no video. I can plug an external monitor up to the thunderbolt port and get video on an external monitor fine. Any suggestions?
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7 Comments
Active today
Is it LCD or LED? Assuming LCD (I am not sure why):
Screen (you just replaced)
Inverter (to run the screen)
Cold cathode tube (to light the screen)
Interconnections to all these.
Not likely the GPU as the external monitor would not light in that case.
Screen (you just replaced)
Inverter (to run the screen)
Cold cathode tube (to light the screen)
Interconnections to all these.
Not likely the GPU as the external monitor would not light in that case.
Active 7 days ago
It is a late model IMac with 27 inch 4k retina display. Not sure about whether LCD or LED, I would also assume LCD. Everything is connected and appears to be seated well. The screen never lights up or shows any backlight. However, an external monitor works just fine. Im wondering if one of the connections on the board has failed.
Active today
I would suspect the Inverter, Cold Cathode tube if LCD.
If LED, I agree it could be a connection on the board (say where the video cable sits)
If LED, I agree it could be a connection on the board (say where the video cable sits)
Active today
Also, I am assuming "screen" meant the glass piece. If you replaced the entire unit, that would include the parts I mentioned. Sorry for my own confusion
So yes, look at the connection points on the mainboard.
So yes, look at the connection points on the mainboard.
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