Screen replaced, vertical block on LCD, external display works
I broke the LCD of my mid-2011 27" iMac while we were moving apartments. The LCD was beyond repair, but when I connected the computer to an external Dell display (via a mini displayport->VGA adapter plugged into a Thunderbolt port), there were no issues outputting to that display. So it seemed that only the LCD needed to be replaced.
I replaced both the LCD and the LCD cable (the ribbon cable with the ZIF connector). Now, the display works without distortion except for a large vertical block that takes up 10-15% of the screen:
The vertical block is not always the same colors: sometimes as above it's a gray block, other times it consists of multicolored lines. But it's always in the same location on the screen.
I'm trying to diagnose the issue. The screen is a new replacement part, but maybe it is faulty? The fact that the external display has no issues makes me think it's not a video card issue. Are there other tests I should do? I have checked that the ZIF connector is seated properly, and it appears to be.
Hello, I'm in the middle of replacing my lcd screen too, A1312 emc 2429 27" 2011 iMac, Unfortunately the screen I ordered has only LED backlight cable attached. Do you know what are the other cables I will need? I threw out the old screen without thinking about those cables.
Django Chained さんによる