It looks like the bias supply from the Vox AC50.Littlewyan wrote:
Edit: That bias supply is very....different. Never seen anything like it. Where did you find that?
Search found 7 matches
- Sun Jul 06, 2014 4:13 pm
- Forum: Technical Discussion
- Topic: redplating in power section - baffeled could use some help
- Replies: 22
- Views: 2489
Re: redplating in power section - baffeled could use some help
- Sat Apr 19, 2014 4:17 am
- Forum: Technical Discussion
- Topic: Help me troubleshoot. Blowing tubes and fuses
- Replies: 45
- Views: 8073
- Sat Apr 19, 2014 4:16 am
- Forum: Technical Discussion
- Topic: Help me troubleshoot. Blowing tubes and fuses
- Replies: 45
- Views: 8073
- Sat Apr 19, 2014 4:15 am
- Forum: Technical Discussion
- Topic: Help me troubleshoot. Blowing tubes and fuses
- Replies: 45
- Views: 8073
- Sat Apr 19, 2014 4:14 am
- Forum: Technical Discussion
- Topic: Help me troubleshoot. Blowing tubes and fuses
- Replies: 45
- Views: 8073
Re: Help me troubleshoot. Blowing tubes and fuses
Well, not much more to say other than you've got a bad component somewhere in your power supply. Bypass the cap at the node that feeds the screens w/ an equivalent cap and see what that does for you.
- Sat Apr 19, 2014 4:02 am
- Forum: Technical Discussion
- Topic: Help me troubleshoot. Blowing tubes and fuses
- Replies: 45
- Views: 8073
Re: Help me troubleshoot. Blowing tubes and fuses
Did you check all of your HV supply and your bias supply? The blue flash is most likely caused by the screens losing voltage - caused by a short in the choke or a bad filter cap. Is the flash in both outputs or just one tube?
- Sat Apr 12, 2014 8:22 pm
- Forum: Technical Discussion
- Topic: Help me troubleshoot. Blowing tubes and fuses
- Replies: 45
- Views: 8073
Re: Help me troubleshoot. Blowing tubes and fuses
I had an issue like this years ago w/ an old bf super reverb. IIRC the problem was a bad choke. Sounds like your problem is in your HV supply somewhere.