coaxial input.? A few days ago it worked fine. (and always has). Then we shut it off before bed, Turned it on the next morning and input a/v 1, and a/v 2, wont work now. It is just a blue screen. It has always had a motorola DVR hooked into a/v 1 and a combo DVD/VCR into a/v 2 .It will work with the coaxial plugged in, But after about 5 seconds it gets darker, then stays like that for about 20-30 min. and shuts off. You turn it back on and it does the same thing.