How can I fix this used TV I bought???

Question

I bought a TV off of craig's list and its a Mitsubishi CS-27EX1. I don't know why, but when I tested it out before I bought it, the TV was fine, but now the picture tracking is completely messed up. This picture is not clear at all. I thought it was the DVD player or the cables but I tried a new cable and different DVD player and the picture was the same. Any suggestions??Thanks!