I have a problem. I have went through 4 DVD players in the last 3 months. They all give the following error message: Either "No Disc", or "Bad Disc". Anyone know what could be causing this. They work fine in other rooms of the house, but after I bring them into the other room, they all do this and no longer work. I do have my high-voltage electricity coming into the garage on the other side of the wall from where the DVD players are. Could this cause the problem? Thanks.