|The slot the ribbon cable plugs into is very narrow - it can be finnicky to get the ribbon cable to plug into it . The end of the ribbon cable must not be bent out of shape at all, and you must make sure the side with contacts on the end of that cable is facing the side of the slot with the contacts in it. You must plug it in so that it's being plugged in staight, perpendicular to the surface the slot is on. You may need to place your fingers across near the end of the ribbon cable such that the entire width of the ribbon cable is supported - relatively rigid - while you're plugging it in. |
"I removed the plastic clip "
Which clip ?
Sockets for ribbon cables that have no connector on the end of them often have a method of locking the ribbon cable into the slot right on the slot itself. That should be released before you unplug the cable, and must be released before you plug it in. It may not be removable - it may just move upwards over the slot.