[Doug Freyburger]

Doug Freyburger wrote:
whosbest54 wrote:

Perhaps the Y-adaptor is the wrong one and it adapts to a 2-conductor
mono female connection or there's an issue with the plugs not making a
good connection. Did you try reversing the connection to the TV and see
if it changes channels? If it doesn't change channels, then you know the
problem isn't with the TV but with the adaptor or the speakers.

You can test the TV line level outs by connecting them to a stereo line
level input on an amp or receiver if you have one available.

Will do. Also thanks to Dave Platt for the response.

Contact cleaner is like magic. ;^) So is inspecting the cables with a
magnifying glass to confirm the number of conductors to make sure I
really did have the right cable.

There was even better news than I expected - The volume control on the
TV works to set the volume on the audio line-out jacks. It's intended
to plug a real stereo and use its volume control but the PC type
speakers do work fine. Since it works, time to get "nice" speakers.
Where "nice" is in comparison to TV speakers not in comparison to real
stereo speakers.

Thanks everyone!