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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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In Reply to: Eico HF 30 rebuild, hums badly... posted by gkargreen on December 22, 2015 at 10:28:10:
Randy
You aren't grounded properly or one of the EZ81s are bad or you could have a leaky coupling cap feeding the EL84s.I have seen new caps leak at times..Just lift the side going into the output tube grids and see if you are leaking DC..This is most likely improper grounding tho.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken
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Follow Ups
- RE: Eico HF 30 rebuild, hums badly... - Michael Samra 07:21:47 12/23/15 (12)
- RE: Eico HF 30 rebuild, hums badly... - gkargreen 08:39:16 12/23/15 (11)
- problem solved! - gkargreen 12:44:49 01/08/16 (0)
- OOPS, spoke too soon... - gkargreen 21:14:13 12/23/15 (1)
- RE: OOPS, spoke too soon... - Michael Samra 22:52:04 12/23/15 (0)
- Michael hits a home run! - gkargreen 17:30:20 12/23/15 (1)
- No surprise - Awe-d-o-file 05:48:23 12/24/15 (0)
- One more thing. - Michael Samra 11:40:51 12/23/15 (1)
- RE: One more thing. - Sherwood Forest 14:09:59 12/23/15 (0)
- RE: Eico HF 30 rebuild, hums badly... - Michael Samra 11:10:38 12/23/15 (0)
- RE: Eico HF 30 rebuild, hums badly... - FenderLover 09:18:35 12/23/15 (2)
- RE: Eico HF 30 rebuild, hums badly... - gkargreen 10:42:56 12/23/15 (1)
- RE: Eico HF 30 rebuild, hums badly... - TimeConstant 12:23:47 01/08/16 (0)
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