Thanks for the suggestion Leeful, sadly this doesn't seem to be the issue. The rollers seem to be fine as well. The PS4 just doesn't respond to me inserting a disc, I somewhat "force" it in there but it doesn't read the disc. If I reboot the PS4 the drive does seem to recognize that there's a disc half way jammed inside it, and it ejects. The PS4 menu then shows that there is a non-recognized disc inside the system, even though it has been ejected... Very strange. I hope it's just a flex-cable issue, the ears on those were broken by someone else who tried to repair the system. I'll just have to wait a couple weeks for the replacementcable to arrive...