Question about JVC HX-D77 Shelf System

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VOLUME CONTROL PROBLEM.

WHEN I TURN THE VOLUME DOWN IT DOESNT LIKE TO GO DOWN RIGHTAWAY,SOMETIMES IT GOES UP VERY FAST WHEN I'M TURNING THE KNOB SLOW, OR WHEN I TURN IT UP SLOWLY THE VOLUME GOES DOWN,IN ORDER TO USE THE VOLUME KNOB I MUST GO VERY VERY SLOW. IT HAS DONE THIS EVER SINCE I TOOK IT OUTTA THE BOX. I WOULD HAVE TOOK IT BACK TO BEST BUY , BUT I DIDNT TAKE IT OUTTA THE BOX UNTIL I MOVED INTO MY PLACE, WHICH WAS PAST THE 90 DAY RETURN POLICY. SO, IS THERE A RECALL ON THIS ? OR EVEN SEND ME THE PART THAT WOULD FIX THIS?THANK YOU .

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If the volume control can be turned continuously in either direction (no stopping), then the control is what is called an encoder and the behavior you are describing is an internal logic failure. If the control has an upper and lower limit (only turns so far), then it is a standard volume control and is physically broken and needs to be replaced. In either case, the unit should be under warranty. Return it to Best Buy for repair. Given that it just came out of the box, talk to a manager and request an exchange.
Dan

Posted on Mar 18, 2008

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Posted on Jan 02, 2017

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This sounds like a case of a dirty/defective rotary encoder. The volume control used here is not the conventional potentiometer type , but a rotary set of switches that tell the sytem if the knob is being turned left ot right.
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