Tube emitting tone

Tubes Asylum

Questions about tubes and gear that glows. FAQ

Any fix for a WE 417a tube that's emitting an intermittent tone that pops up about every hour? If I tap the tube, it stops. I'm sure it's the tube because I've swapped channels and the tone follows.

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Topic - Tube emitting tone - Joe Backer 12:57:48 10/03/21 (7)

That's called 'microphonics' and you simply have to replace the tube. - Ralph 10:20:43 10/06/21 (2)

RE: That's called 'microphonics' and you simply have to replace the tube. - pictureguy 21:16:29 11/12/21 (1)

All tubes, even good ones, are microphonic - Ralph 10:23:49 11/15/21 (0)

RE: Tube emitting tone - Jack G 13:45:08 10/03/21 (3)

RE: Tube emitting tone - pictureguy 14:42:47 10/03/21 (2)

O rings - Uncle Mike 15:52:01 10/03/21 (1)

RE: O rings - pictureguy 19:28:22 10/03/21 (0)

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