Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: GS1100 on July 03, 2015, 03:36:55 pm

Title: 6v6 Plexi Build Problem
Post by: GS1100 on July 03, 2015, 03:36:55 pm

Hey guys, trying to get a 6v6 plexi off of the ground. I get no sound static, hum or otherwise. Voltages look good except for V3: pin 1 193V, pin 6 188V, pins 3 and 8 81V. Same numbers with different tubes. I've double checked my wiring and component values, all good. Voltage off of the 3rd filter cap (C in the schematic) is 260V, 4th cap is 224V. Any ideas?

Title: Re: 6v6 Plexi Build Problem
Post by: shooter on July 03, 2015, 05:21:42 pm

Quote

pins 3 and 8 81V

guessing one of your "tail" R's is wrong.  Could also disconnect the NFB for testing, the other values seem * close enough* for now.