In Reply to: RE: Thup-thup-thup and static maybe an oscillation posted by Wilbur Pan on December 12, 2016 at 19:21:29:
I don't mean to be a pest or be insulting about this - but how did you check the sockets? And even if you did check them clean 'em well anyway!! You might be amazed at the dirt in there. It wouldn't hurt to clean the 9 pin sockets either.
If the noise is from both channels it has to be either something common to both channels (like the 12AX7) or the same fault showing up in both channels.
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Follow Ups
- RE: Thup-thup-thup and static maybe an oscillation - Jim McShane 08:49:02 12/13/16 (2)
- RE: Thup-thup-thup and static maybe an oscillation - Wilbur Pan 17:37:45 12/13/16 (1)
- RE: Thup-thup-thup and static maybe an oscillation - altecboy 02:36:48 12/18/16 (0)