Well changing earth and power supplies made no difference, and I've narrowed
it down to the DVD player, when I disconnect the RCA's from the DVD to the
source selector the interference stops. But when I reconnect them for the
sound the interference comes back.

Hi Dan,

Have you tried shielded RCA's - obvious I know, but could be that.
Especially depending on how they are routed or what they run close to. Had a
similar problem with the sound on a CD changer in an Escort once. You know
the sort of thing, boy racer, lots of home wired amps etc. The look on his
face when I suggested he spend some money on some decent cables was a
picture - he'd used nothing better than cheap bell wire to do the speakers.


"Dan McIntyre" wrote in message
...
Well changing earth and power supplies made no difference, and I've
narrowed
it down to the DVD player, when I disconnect the RCA's from the DVD to the
source selector the interference stops. But when I reconnect them for the
sound the interference comes back.