Fix for bad Apple Cinema HD Display?

[blindowl]

I have a 23" Apple Cinema HD Display I'd like to fix. In the middle of the screen the colors are ok, but around the edges the image is very discolored. Gray colors turn pink, and at the very edge of the image is yellowish. The photo does not really show the truth, it is actually much worse.

What could the problem be? Is the LCD simply worn out, ready for the bin, or is there any possible fix? The only thing I know of is replacement of capacitors or the backlight.

Anyone have any suggestion?

 

[Franklinstein]

Many of them ended up like that, with splotchy pink areas. It's a known issue with those displays and many of the older ones before it. At least one of mine does it too (a white ADC Cinema Display, which is why it was something like $10). This one isn't Apple's fault, really, since some PC manufacturers have the same problems when using these panels. I think LG Philips made these, but some could also be Samsung.

I'm not sure exactly what the root issue is with these panels. It's not entirely backlight lamp-related or else the screen should have a uniform pink hue to it, whereas these only have the pinkness sort of in irregular patches around the edges. It could be a result of uneven or excessive pressure on the panel or possibly imperfections in the light filters, possibly some binders breaking down therein. Regardless I don't believe there's a fix, at least not one that doesn't involve disassembly or total replacement of the LCD panel itself. Maybe someone has a good experience of replacing the panel with a different model family that doesn't have the problem? For example, from an iMac with a failed logic board?

 

[blindowl]

Oh, that's too bad. I don't think I will bother then, and just put it to storage. Aside from the color bleeding issues, I was a little bit surprised by how bad the picture quality is, compared to modern standard monitors. Screen quality has increased greatly over the last 15 years.

 

[olePigeon]

Is there an app that can use a light sensor to measure the screen's white value, then create a gradient overlay profile that adjusts for the discoloration?

If there isn't, seems like that would be a useful tool to make a fake reference monitor.