A friend brought by a gorgeous Badcat Classic Deluxe for me to check out and it makes a weird electrical buzzing noise when you flick it off standby.
Any thoughts on what this could be. It sounds like something out of young Dr. Frankenstein's lab.
Bad Cat Deluxe goes BZZZT when switching on
Moderators: pompeiisneaks, Colossal
Re: Bad Cat Deluxe goes BZZZT when switching on
Failing standby switch.
I build and repair tube amps. http://amps.monkeymatic.com
Re: Bad Cat Deluxe goes BZZZT when switching on
Bad cat with the insanely high EL84 voltages? Maybe failing EL84s?
He who dies with the most tubes... wins
Re: Bad Cat Deluxe goes BZZZT when switching on
6V6 power tubes and a GZ34 rectifier
-
frankdrebin
- Posts: 131
- Joined: Wed May 14, 2014 11:40 am
1 others liked this
Re: Bad Cat Deluxe goes BZZZT when switching on
standby in GZ34 amp? useless and detrimental for the tube itself.
It can be arcing inside the switch or a tube,or a socket.
It can be arcing inside the switch or a tube,or a socket.
-
Stevem
- Posts: 5144
- Joined: Fri Jan 24, 2014 3:01 pm
- Location: 1/3rd the way out one of the arms of the Milkyway.
Re: Bad Cat Deluxe goes BZZZT when switching on
Since you can not come up with the 4 possible things that could be making this issue and neither can the owner of the amp then it needs to be taken to a amp tech before more possibly harm takes place.
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
-
Leo_Gnardo
- Posts: 2585
- Joined: Thu Sep 27, 2012 1:33 pm
- Location: Dogpatch-on-Hudson
Re: Bad Cat Deluxe goes BZZZT when switching on
At first I was gonna ask, does the Bzzzt diminish with time, or stay more or less constant. After seeing the video, sounds as if it's constant.
Could be simple as unmatched output tubes. OR perhaps an open screen grid resistor, or sg resistor burnt to the point it's off spec. Failed filter caps also come to mind. Yes, it would be good to "seek professional help."
Could be simple as unmatched output tubes. OR perhaps an open screen grid resistor, or sg resistor burnt to the point it's off spec. Failed filter caps also come to mind. Yes, it would be good to "seek professional help."
down technical blind alleys . . .