RE: What happens when tubes go bad

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In Reply to: What happens when tubes go bad posted by vetmedrobert@gmail.com on March 22, 2012 at 10:32:04:

Reading up on these phenomena I decided to let it run in a circuit with a signal and after 3 hours or so plate voltage was up to the 90 volts I expected. Probably the cathode needed reforming? Thanks for your help.

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Topic - What happens when tubes go bad - vetmedrobert@gmail.com 10:32:04 03/22/12 (3)

RE: What happens when tubes go bad - vetmedrobert@gmail.com 16:48:10 03/24/12 (0)

The coating on the cathode is burned off by the filament or either the filament is burned up - grhughes 06:50:40 03/24/12 (1)

RE: The coating on the cathode is burned off by the filament or either the filament is burned up - vetmedrobert@gmail.com 08:41:32 03/24/12 (0)

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RE: What happens when tubes go bad - vetmedrobert@gmail.com 16:48:10 03/24/12 (0)

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