No display after incident
Well, I made a huge mistake following an SSD upgrade on my beautiful 2017 4K Retina iMac. I didn’t replace the adhesive strip immediately after upgrading and walked out of the room for about 20 minutes. When I returned, I noticed that the display had fallen a bit forward. The eDP cable has come unplugged, and the screen was being suspended by the black cable that connects the display to the logic board. Needless to say, I had no display at this point.
I attempted not to panic as I placed the iMac on its back and carefully reseated the eDP and the black display connections to no avail. I even replaced the eDP cable from one found on eBay and I am still not getting any display whatsoever.
Fortunately, the iMac boots and I had previously enabled screen sharing, so I’m able to VNC into the iMac once it boots. The display is not being detected at all, however. In About This Mac, it shows a 23-inch display with no real details and is running in scaled mode at a lower resolution, as would be expected on a generic/non-detected display.
I’m starting to worry now that I have either irreparably damaged the display connections or the pin headers on the logic board. Short of taking this to an Apple store for a costly repair, does anyone have any tips I could try?