Is it the TV programme the DVD is tuned to or the one the TV is tuned to?
If it is the TV sond then two possibilities.
The SCART lead is poorly screened. If you have a fully wired SCART plugged into a TV socket wired for output as well as input then the sound from the TV's tuner may be being fed back down the lead. If the lead is not properly screened these signals can "leak" into the wires carrying the sound from the DVD.
It could be the SCART wiring in the DVD. Similar to the above. The signals from the TV coming back down the SCART find their way onto the signals from the DVD within the DVD machine. A similar thing could occur with the sound from the DVD's own tuner.
First thing to try is a better SCART lead. Or try a different socket on the TV that is not wired for output. Or look in the TV set-up to see if it is possible to turn off the feed of the tuner to the SCART output.
If it's in the DVD it may be a little harder. One thing you could try is select something other than the tuner or the SCART the TV is connected to as the recording source. Might involve some trial and error (plenty of the latter probably
) to work out where it's coming from and what works to fix it.
