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In Reply to: RE: A tube bias question (or maybe not?) posted by ejman on June 21, 2014 at 20:32:56:
All power tubes eventual fail. When you can no longer bring the bias back up to 500mv it is probably time to replace the tube
Alan
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Follow Ups
- RE: A tube bias question (or maybe not?) - ahendler 21:56:10 06/21/14 (4)
- RE: A tube bias question (or maybe not?) - Lee of Omaha 10:56:32 06/22/14 (0)
- RE: A tube bias question (or maybe not?) - ejman 08:06:47 06/22/14 (2)
- As you have an adjustment for each tube try swapping the problem tube... - DeKay 09:58:53 06/22/14 (0)
- RE: A tube bias question (or maybe not?) - ahendler 08:55:11 06/22/14 (0)