: Hi Charles, I've sent you the schematic for your radio. I'm not sure what you want to know. There's a switch to select the mains voltage for your area. If you mean what knob adjusts the volume (sound level) it will be one of the front knobs. If there's no volume it could have a fault. I don't have one of these sets but the mains voltage switch is probably on the rear of the chassis. The dial cord diagram shows the tuning shaft on the right. There will be volume and tone controls probably on the left. They will be smooth controls, the switches will click into position.
: If you can explain what the problem is I may be able to help futher.
: Don Black.
: : Can someone tell me what knob controls the voltage? Does anyone out there own one?
: : Charles