Caution: even though this should already be abundantly clear: dismantling a TFT monitor invalidates any warranty claims!
Now you've done it: with the seal broken, you can no longer file any claims with the manufacturer.
Modern displays have a metal frame that is held on by four screws.
The ribbon cable conundrum: the cables on some panels are too short, making easy installation on an overhead projector impossible. The rule is: in case of doubt, check first!
A whole host of things can go wrong with some displays if the cables behind it get in the way and thus block the light to the overhead. Only those with a real knack for tinkering should attempt to extend the foil cables and thus change the inverter arrangement.