I recently moved and lost the manuals needed to help me with this. I have an RCA TV that is hooked up and running fine. I also have a Koss DVD player that is hooked up and appears that dvd plays since the counter counts when play is pushed. However when I select input on my remote. None of the input channels show a picture. They all say unusable signal. There are two input sources on the back of the DVD. It uses the white/red/yellow cable. I have tried it on both inputs and get the same response. Any ideas?

Sounds like it has been working before, so you haven't touched the connections until now correct?

If you have another a/v source, such as a vcr or another dvd player, try it on both TV inputs, if it works, then its problem with the Koss. If not then it's a problem with the TV inputs.