I have an older TV. I have a Direct TV box. And I have two separate DVD players. One is a DVD/VCR recorder combo. The other is a DVD player only. Until recently, I have been routing the Satellite and one DVD at a time through an older VCR player/recorder which has now stopped working after many years. Now, bypassing the old VCR, I cannot seem to get either DVD machine hooked up correctly to play or record. And, although my TV has yellow, red & white cable inputs, the TV is 18+ years old. Trying to plug the cables direct to the TV does nothing.

Can someone help? Thanks.