Bob Urz / Vector Viper:
Yes.... agreed.
Remove the control, disassemble carefully..... clean out most of the goo and
spring out the contact brushes to achieve more tension......... reassemble
and reinstall.
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Best Regards,
Daniel Sofie
Electronics Supply & Repair
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"Vector Viper" wrote in message
...

"BOB URZ" wrote in message

I had a aiwa cx-na888 come in with a strange volume control
problem. It wants to go to max volume and stay there no matter
which way the shaft is turned. I don't have the manual yet.
Its a rotary encoder, not a liner audio pot. Both sides of the encoder
seem to look the same when turning the control while looking at them
on the scope. Anyone seen this before and have any insight?
I soldered up a few suspicious connections, but no change.

I have seen this twice. It was the control itself both times.
taking it apart and cleaning it will probably fix it, or just get a new
one.
You may find turning the knob VERY slowly CCW will reduce the volume;
both I saw acted that way...I think AIWA used too much goo in the
controls...

Viper