I currently have two models, one in pieces, that I attempted to connect to my LCD TV using a simple $4 RF adapter from Radio Shack. I get no indication from either machine that it's working - no sound, no change in video, no black screen, no "blip" in the signal that would indicate a poor connection. I have no idea if the problem is with the unit, the games, the power supply, or the adapter.
How would I diagnose this problem? Is there a repair guide available?