Yesterday, while I was listening to music, the fuse blew in one of my Beveridge 2SW amplifiers. These are direct-drive amplifiers with a solid state input and driver stage that runs on about 70V and a 4-tube output stage that develops 3200V. The two stages are separated by about 6 inches of open space inside the chassis. I had heard a few snapping sounds prior to loss of power, so I thought maybe a power tube was arc-ing or that there might be a bad solder joint in the HV section. When I opened up the chassis, I noted a fairly significant spider web that was strung in the gap between the solid state and HV output stage sections. It was fairly extensive. Everything else looked copacetic. When I applied power on the bench, with no speaker panels connected and no audio input, everything is perfectly fine. All voltages measure as expected, and the amp ran for more than 20 minutes with no hiccups. Could I have had a short between the input/driver stage and the HV stage that was "cured" by just brushing away the web? Otherwise, I now have to worry about the Beveridge ESL panels, which are unobtainium. Thanks.
This post is made possible by the generous support of people like you and our sponsors:
Topic - Can a spider web do this? - Lew 14:43:53 05/8/20 (14)
- Sad to say there is something else going on. - Lew 10:38:54 05/10/20 (8)
- RE: Sad to say there is something else going on. - AJ 13:57:17 05/10/20 (7)
- RE: Sad to say there is something else going on. - Lew 10:18:29 05/11/20 (6)
- RE: Sad to say there is something else going on. - AJ 17:28:14 05/11/20 (5)
- I'm somewhat encouraged that the panels are OK - Lew 12:33:21 05/12/20 (2)
- RE: I'm somewhat encouraged that the panels are OK - 6bq5 14:21:36 05/12/20 (1)
- I do appreciate the advice,... - Lew 16:17:05 05/12/20 (0)
- AJ, thanks for the useful information - Lew 07:53:09 05/12/20 (1)
- RE: AJ, thanks for the useful information - AJ 13:23:34 05/12/20 (0)
- RE: Can a spider web do this? - AJ 07:45:37 05/10/20 (2)
- RE: Can a spider web do this? - Lew 08:24:18 05/10/20 (1)
- RE: Can a spider web do this? - AJ 16:12:32 05/10/20 (0)
- 3000 volts can do very strange thing, Yes, they can jump along a web - Chip647 14:53:23 05/8/20 (1)
- You've got one too. - Lew 15:01:09 05/8/20 (0)