Check here for instructions on how to dismantle your device if still necessary
:link:The ribbon cable sits in a special holder which needs to closed properly after you inserted the cable.
there are two types:
1. with a little plastic bar that folds up to release the cable and folds down to lock it into place.
2. just a connector where the cable is pushed in, but you need to get the cable right to the end so that it locks.
The first is more common and if broken you will need a very fine soldering station, copper mesh to remove the old solder and a new connector.
Sometimes you can be lucky and find a similar connector in old DVD players and other electronics but it is possible to order them new from a good electronics store.