RE: These here tubes can be tricky little buggers!

Posted by Triode_Kingdom (A) on September 28, 2016 at 06:33:49

In Reply to: RE: These here tubes can be tricky little buggers! posted by vinnie2 on September 28, 2016 at 03:26:25:

"why would the tube drawing more current cause a hum?"

You said anode voltage was much higher than the other tube. That would indicate it was drawing less current. A number of things could cause that, including misalignment of the grid (as someone else mentioned) or a defect in the filament. If the filament is AC heated, all bets are off. :)

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Follow Ups Full Thread

Topic - These here tubes can be tricky little buggers! - vinnie2 18:25:29 09/27/16 (11)

RE: These here tubes can be tricky little buggers! - TomWh 08:31:44 09/28/16 (0)

RE: These here tubes can be tricky little buggers! - Chip647 19:08:13 09/27/16 (7)

RE: These here tubes can be tricky little buggers! - vinnie2 03:26:25 09/28/16 (6)

RE: These here tubes can be tricky little buggers! - Triode_Kingdom 06:33:49 09/28/16 (3)

RE: These here tubes can be tricky little buggers! - vinnie2 07:48:43 09/28/16 (2)

RE: These here tubes can be tricky little buggers! - Triode_Kingdom 08:40:12 09/28/16 (1)

RE: These here tubes can be tricky little buggers! - vinnie2 09:06:52 09/28/16 (0)

RE: These here tubes can be tricky little buggers! - Chip647 04:42:21 09/28/16 (1)

RE: These here tubes can be tricky little buggers! - vinnie2 05:46:05 09/28/16 (0)

RE: These here tubes can be tricky little buggers! - elblanco 18:45:06 09/27/16 (1)

RE: These here tubes can be tricky little buggers! - vinnie2 05:46:53 09/28/16 (0)

Follow Ups

RE: These here tubes can be tricky little buggers! - Triode_Kingdom 06:33:49 09/28/16 (3)

RE: These here tubes can be tricky little buggers! - vinnie2 07:48:43 09/28/16 (2)

RE: These here tubes can be tricky little buggers! - Triode_Kingdom 08:40:12 09/28/16 (1)

RE: These here tubes can be tricky little buggers! - vinnie2 09:06:52 09/28/16 (0)

RE: These here tubes can be tricky little buggers!

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