Backlight not working. Camera, Sound, USB, and LCD are functional.
I have a 24” LED Cinema Display that stopped working properly. The monitor is able to power my laptop, utilize the USB ports with data, sound works, and the iSight camera works. I isolated the issue to the backlight as I shined a light on the screen and I can see my desktop mirrored.
Interestingly, when I first plug in the display while connected to my Macbook Air, the screen will flicker for a split second so I assume that the backlight still works and that is NOT the issue but I am not entirely sure. When the display is on, I do not see a dim glow at the bottom even at the highest brightness.
I opened up the display to make sure the the cables were not pinched or anything and fully connected but I am at a loss right now. I unscrewed the power supply and logic board and didn’t notice any bulging capacitors after doing a very quick glance. I noticed on the power supply board there was a white chalk like substance covered on the left portion of the board and I cleaned it with isopropyl alcohol but didn’t notice anything else.
I was trying to follow a similar guide on this website but I am not sure where to start. Wondering if it could be a capacitor issue, or voltage issue?
Should I just cut my losses and recycle the machine?
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