Chosen Solution
Has anyone identified what the missing vertical line defect is in these panels? Has anyone successfully repaired this display? If so what is required to fix it?
I believe I know exactly what your problem is. If you can take a screen shot of the problem using your Grab utility, move it around in the background to see if the lines exist on the shot. Or use an external monitor and see if the lines are gone. To be sure take a photo of the problem and post it. If it’s what I think, you may be able to get Apple to replace the screen for free. They’ve done three for me this summer but we’ve also had reports of them not honoring this, so a silver tongue helps. After I see your screen, and it’s what I believe it to be, I’ll give you case numbers and “in house” article number. Does your machine have a 1.83 GHz processor?
Hi, I think the vertical lines come from defective COF (chip on flex) connection. This chip drives the current for the pixel on the panel and interface with the driver chip (LVDS chip). On this screen there is 4 horizontal COF, and 5 vertical COF. Repairing this will need in my opinion high skills, good tools like hot bar soldering station (the chip is not soldered but glued thanks to an anisotropic tape) and good knowledge. I don’t think this can be done by a DIY. By the way, the replacement of the whole screen seems to be the best solution right now. I’ve managed to use another LCD to replace my defect screen but I had to do electronic and mechanical adaptation to succeed. here is the link: Do any other LCD panels work with this iMac? Best Regards, Guile
No but I believe it can be replaced witha spare from an otherwise identical model.
