hifi engine

Service manual

Service manual

I have the NR-550 that has a bad volume control. I need the service manual for this unit or the part number and value of the dual Potentiometer that is used. I would use a meter but the back of it has broken in half, it was destroyed in shipping. Thanks


Re: Service manual

I have the same unit. Could not find service manual. It is a 250K dual PCB potentiometer. You will have to buy one and then solder wires from the pot to the board. The original part number was 4321330. I could not find it anywhere.

Hope this helps