[John123]

First, try it on a different TV - especially important if you still have a plasma set, as these can sometimes cause interference issues with VCR's. A good ol' CRT is always best..although not always the most practical solution, these days.

Also try ruling out anything nearby such as a Wi-Fi router/ booster, mobile phone, desktop PC, etc. Perhaps try physically moving it to a different room as there could be such interference coming through the wall from the neighbours.