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Old 02-10-2013, 06:45 PM
Eric H's Avatar
Eric H Eric H is offline
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Join Date: Jun 2002
Location: So. Calif
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It has a loose connection somewhere, possibly in that repaired Ion Trap.
It could also be a flaky connection at a tube socket.
You need to start poking around with a wood or plastic stick and see if you can isolate it.

Bad Mica caps in the sweep circuit are also a possibility but I wouldn't think tapping would affect them much.
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