On Fri, 23 Jan 2004 16:08:16 -0600, Gray Shockley
wrote:

On Fri, 23 Jan 2004 15:56:51 -0600, Ray D. O'Mann wrote
(in message ) :

Hi Folks!
Dumb Question #1: How can I test vacuum tubes without a tube tester?
Namely, 6AK6, 6BE6, 6HR6, and 12AX7.
only the filaments, and looking for internal shorts. Not very useful

Dumb Question #2: Is there a solid-state equivalent to these tubes?
No, they are designed to operate at something around 150 volts DC.
They are from an old Knight Star Roamer that keeps dying.

Dumb Question #3: Is the above worth doing?
There are better ways to check. However life expectancy was rarely a
problem with any of those tubes.

Thanks for your help.~~Ray



Does it work for a while and then stop working?



Gray Shockley
--------------------------------------------------------
Who religiously believes it is always capacitors
(unless it's a bad power cord)