Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Big chief on July 15, 2023, 07:41:19 pm

Title: Hum problem
Post by: Big chief on July 15, 2023, 07:41:19 pm

Moved chassis from one cabinet to another cabinet now have hum problem
When I touch the chassis the hum goes away any help would be great

The amp is an Valco 6424 with ground plug

Title: Re: Hum problem
Post by: Big chief on July 15, 2023, 08:31:41 pm

Sorry for posting found ground problem

Title: Re: Hum problem
Post by: Latole on July 18, 2023, 03:10:34 am

What was the problem ?

Title: Re: Hum problem
Post by: Big chief on July 19, 2023, 07:07:38 am

The ground wire disconnected re attached  problem solved rookie mistake
Thanks

Title: Re: Hum problem
Post by: tubeswell on July 20, 2023, 11:56:20 am

Rookie Amp = 0 hum, Rookie = 1 won. :-)