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Bufo Bill · 13th Aug 2022, 10:22 am

Hi, thanks for the responses.
Joe, the tube is branded "Fender USA".
Andy, I will definitely be putting this back to factory spec before making any changes.
Anode current was calculated via voltage and impedance. I measured this between pin 8 of the 5Y3GT valve which goes to the transformer and anode pin of the 6V6GTA and calculated the current that way. I can't take further measurements until I can replace the 1k resistor that burned out.
Cheers from Bill.

13th Aug 2022, 10:22 am	#14
Bufo Bill Heptode Join Date: Jan 2016 Location: Wolverhampton, West Midlands, UK. Posts: 777	Re: Fender Vibro Champ Amp Hi, thanks for the responses. Joe, the tube is branded "Fender USA". Andy, I will definitely be putting this back to factory spec before making any changes. Anode current was calculated via voltage and impedance. I measured this between pin 8 of the 5Y3GT valve which goes to the transformer and anode pin of the 6V6GTA and calculated the current that way. I can't take further measurements until I can replace the 1k resistor that burned out. Cheers from Bill.