Original post by: markus weiher ,


a few more informations would make it easier to answer this.

but in general - most "older" (or better) stereo recievers had a potentiometer to regulate the volume - if that part is faulty (scuffed contacts) the volume knob can not longer work properly

but to see if it's defective you have to open it - maybe exchanging the part would be easier then cleaning/repairing it (if that would be possible for the used potentiometer in this device)