My Cambron console is behaving extremely strangely, tonight when I turned it on it warmed up but after 20-30 seconds, no sound, however as soon as I turned the volume down (it was on full) it came to life, yet turning the volume all of the way down had no effect, it remained at the same volume up until nine tenths, then cut out on full. I had a wire connected to the "pickup terminals" on the rear of the chassis, attached to a mono headphone jack, which I used for playing music on my computer through the radio, old jazz and stuff.
I usually found that if the jack was plugged in to my computer the radio would cut out at 8-9 tenths of the volume, but the computer music would flood over the radio simultaneously, so I could either tune it off station to listen to the computer music or turn the selector knob one or two clicks, where there was no "competition" from the radio frequency and when I wanted to listen to the radio again, I'd simply turn the selector back and unplug the computer, whereby the radio would work as normal through it's full volume range.
Now even unplugged the volume remains constant from zero to 8-9 tenths, then goes silent above that.. If I unplug the wire with the headphone jack from the radio, the radio ceases to work altogether. Out of curiosity I connected a 22μF 30v electrolytic capacitor across the pickup terminals on the radio and it's as if the lead with the headphone jack is again present, the radio works, but the volume is constant as before from zero to 8 tenths, then silent above that! Obviously something somewhere in the circuit is playing silly buggers, but what???
Any idea's?
Bit of a head scratcher!!!

Not familiar with your radio, but pickup/volume circuitry quite often is directly connected to grid bias.
Sound like the bias is going over the top or missing.
Check for one end of the pot going O/C, or something in the pickup section has come adrift.Or leaky coupling cap.
A circuit should sort it out.
JJ

Johnny, yes you were right! I pulled out the chassis today and looked inside and indeed, the wire from the end of the volume pot had come completely adrift, open circuit! I re-soldered it and everything is now working well.