Question about Technics SA-AX530 Receiver

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My receiver has a broken main volume control knob and I use a remote for this. However sometimes when reducing or increasing volume there is a sudden burst of volume, ie it increases automatically to the maximum. Volume of the centre and surround channels plays at maximum even though you reduce it to minimum. I have since stopped connecting any speaker to these channels. What could be the cause?

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Bad solder connections and or dirty controls.

Posted on Dec 15, 2006

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I located the remote control for the unit and it works fine. As the unit is not the primary amplifier for the home stereo system, I use the remote to control the volume. Thank you for your quick responce, and I will keep you in mind for any future needs.

George Keeler

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The volume control shaft lube, over time and heat exposure, will flow down and corrupt the contact between the volume twister and the spring loaded sensor. Pull the cover off the tuner, locate the volume control and take out the two screws holding it in. It looks like a small circuit board with the volume twister attached.
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1 Answer

It has lost partially the mechanical connection between the volume control knob and the volume control pot.

The knob could be "stripped". A drop of a slightly resilient glue should do the trick. Do not use rigid adhesives, as this will prevent future service to this area of your receiver....accordianman

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