"meters light, but tubes are dead" So you're saying that the tubes do not light up at all?
On Sun, Oct 25, 2009 at 9:55 AM, Richard Radke <rar...@excite.com> wrote: > All, > > I was working the CQ WW DX Friday night (C line and L4B) on 40, picking up > a couple "new ones", cndx here were just so,so. All was well, shut down. > Resumed Saturday morning, > 20 sounded in great shape. Tuned up the twins on the new band, kicked in > the L4B, and nothing. Amp turns on, no smoke, meters light, but tubes are > dead. HV present (1900 and 2600 volts). > > I installed Mike's upgrade kit 2 years ago, with new bleeders, in-rush > protection, and additional cooling. I replaced the feed-thru caps last year > because of a gird current issue. It's been working well, putting out about > 1300 watts into a dummy load. > > My question is. What are the chances of both tubes going at the same time? > In looking at the schematic, the panel lights are on the same side of the > filament xfmr as the tubes. Assuming if the panel lights light, I've got > voltage out of the xfmr. One or both of the feed-thru caps or filament > choke? Those are pretty robust components, rated at 20 amps (if I remember > right) and very hard to find and get out. I can probably build the choke if > needed. > > Any thoughts on what to be looking for before I dive in? > > Rick > W9WS > > _______________________________________________ > Drakelist mailing list > Drakelist@zerobeat.net > http://mailman.zerobeat.net/mailman/listinfo/drakelist >
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