You're lucky, you have a good channel to look at. With a scope
or signal tracer, compare the L chan to the R chan, going from
input to output, with an audio signal into both channels, until they
don't match. Ken
You can get that same signal by tuning to a mono signal or switching the tuner
to mono.
One "obvious" thing to check... Check your cable, and check the connections of
the right-channel jack to the board.
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