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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: I think i found the problem posted by Triode_Kingdom on April 18, 2016 at 16:31:16:
I only have the amp at 90vac. The bias voltage is adjustable, it just doesn't stay put. I try to keep it at certain current/voltage and after a moment it start to drift downwards or the -dc starts to go more negative. And when I go more positive it goes too far. There is not a point where it wants to stabilize. There is a current meter on the amp that is working so it is easy to follow. The 845 is supposed to be nearly new so I don't think it is the tube. any ideas? cheers, Dak
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Follow Ups
- RE: I think i found the problem - DAK 19:23:51 04/18/16 (6)
- RE: I think i found the problem - Triode_Kingdom 05:35:55 04/19/16 (5)
- RE: I think i found the problem - DAK 09:17:57 04/19/16 (4)
- RE: I think i found the problem - Triode_Kingdom 11:04:06 04/19/16 (3)
- RE: I think i found the problem - DAK 11:55:26 04/19/16 (2)
- RE: I think i found the problem - Michael Samra 12:41:40 04/19/16 (1)
- RE: I changed out the jensen coupling cap - DAK 13:27:06 04/19/16 (0)
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