Question about Audio & Video Receivers
If you are tech guy then follow below technical instructions to fix your Amp problem.
Amp has motorized volume control and motor drive circuit has problem so motor rotates just one side (ends up volume) Below picture shows how is motor board and what drive IC is to power the volume motor.
You need to check voltages at pins and replace bad IC.
It is very simple circuit and easy to repair.
Posted on Oct 25, 2008
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There is a good chance that a common control may have developed a high-resistance or 'dead' spot through idleness and is causing your symptom. Turn the POWER OFF and operate every control throughout its range a number of times, especially rarely-used ones like Tape Monitors and the Mute control.
Turn the volume to something reasonable and see if that helped.
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