Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: etneccas on December 10, 2018, 11:02:50 am

Title: debug a recent build
Post by: etneccas on December 10, 2018, 11:02:50 am

deluxe reverb build no sound.......
completely went over  schematic and wiring diagram multiple times with a hightlighter and can't find where I went wrong!
I have 337volts DC on pin1,3,6 and 8 on all the preamp tubes :dontknow:
i could use some guidance........

Title: Re: debug a recent build
Post by: sluckey on December 10, 2018, 11:25:58 am

Quote

I have 337volts DC on pin1,3,6 and 8 on all the preamp tubes

Is this a Hoffman AB763 amp? Sounds like you forgot to connect a board ground buss to chassis ground.

Title: Re: debug a recent build
Post by: etneccas on December 10, 2018, 11:31:53 am

Yes it is a hoffman AB763
doh!   I missed that Thanks sluckey