Had our Polaroid 32" flatscreen with built in DVD for about one year and so far; has been working great as our bedroom set.  We picked it since is was simple and offered a no clutter solution on the corner desk.  We don't use the DVD very often, but after playing perhaps its 14th or so disk... mechanism jammed!

 One good part of the TV's design is you remove one screw and the DVD mechanism slides out via a 5" bay (similar to a PC) from the TV itself.  Somebody was thinking!

 If your DVD is jamming, or loading motor runs constantly, our problem was a torsion spring had reversed its range...