I not too long ago received a 2009 27 inch iMac. I observed the show has bizarre skinny clear vertical traces proven within the photograph beneath.
The traces do not impede something, and are much less seen the farther you might be away, however they’re annoying. The sunshine and darkish spots appear to me transferring upward. There are about eight of those teams of 4/5 traces all through the show about 1-2 inches aside with various visibility. They’re extra seen on darker however not fully black backgrounds.
I plugged the iMac into an exterior show, and the traces weren’t there. Additionally, once I modified the display decision, the traces had been in the identical locations. This makes me suppose it’s not a gpu concern. Whereas the pc was open, I pushed and pulled on a number of the show wires and nothing occurred. I additionally ran the mac with excessive cpu utilization so it will get scorching to see if something would change, and it did not.
Once I opened it up, it appeared the places of the traces corresponded with the ribbon cables that had been happening the show
I discovered another posts the place individuals had the very same concern (traces showing in the identical locations), however they by no means solved the issue apart from changing your complete show.
What would trigger this, and is it doable to repair with out new elements? If it’s the show failing, what particular a part of it’s? I would be capable to get entry to some pcb boards on a scrap iMac show to interchange with.
