Internal Display not working, external is.
I am having a similar issue with a 2010 iMac 21.5".
I can get an external monitor to work fine (I'm actually using it now).
I have tried resetting PRAM and NVRAM with no success.
In system report under Graphics/Displays, I can only see my external monitor connected via Mini Display Port adapter.
I have tried looking at the screen with a flashlight (torch), i cannot see any forms of life.
Any ideas?
Esta é uma boa pergunta?
9 comentários
I'm having the same problem...if I find any solutions I'll let you know
por Brian
I replaced my backlight controller and it didn't resolve the problem. None of the other connections appears to be damaged so I think it's either the replacement display cable I got is not working or I may have shorted something on the logic board. Everything is still working correctly with a plug in monitor, so the logic board works fine otherwise.
por Brian
Did you fix this? I have the same problem. LED 1 and 2 light up, then LED 3. Never LED 4. LED 4 should light up and off if there is any video signal from the logic board (?)
Did you buy a new LVDS cable? How does the LVDS connection look on your logic board side?
So after reading your post I would not buy a new backlight controller since I wonder if that is the right place to start. I also read someone changed the backlight controller and LCD and still not working. This is not easy!
por asle
hi did you end up fixing it?
por Alex Hus
I have not yet fixed mine. From what I've read, chances are either the socket for the video cable is damaged and/or improperly seating the video cable and powering up the computer fried something in the logic board. So replacing the logic board sounds like the next step, but then it's an issue with cost.
por Brian
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