UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Bufo Bill · 16th Aug 2022, 6:34 pm

Okay, today I replaced the feedback loop resistor and the resistors in the 12AX7 oscillation circuit. We have no tremolo and has never worked for me. So could the problem be a faulty 12AX7 as suggested above? Any way to check other than buying a substitute?
Cheers from Bill.

16th Aug 2022, 6:34 pm	#34
Bufo Bill Heptode Join Date: Jan 2016 Location: Wolverhampton, West Midlands, UK. Posts: 777	Re: Fender Vibro Champ Amp Okay, today I replaced the feedback loop resistor and the resistors in the 12AX7 oscillation circuit. We have no tremolo and has never worked for me. So could the problem be a faulty 12AX7 as suggested above? Any way to check other than buying a substitute? Cheers from Bill.