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Can a spider web do this?

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.


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Topic - Can a spider web do this? - Lew 14:43:53 05/8/20 (14)

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