Surely a meter, ohm checking the pin resistance between the cathode and
grid will identify the problem tube ?
Unless the short only occurs when hot.
Adrian Fewster
vk4tux
On 19/3/20 6:45 am, Mark - N5OT wrote:
Thanks ALL!
I'll swap in a different set of tubes to confirm or rule out that it's
one of the tubes. Then if it is a tube, I'll do them one at time to
figure out which tube it is.
Thanks for all the great answers. A bunch of "it's probably a tube"
then a couple outlier answers for if it turns out to not be a tube :-)
73 - Mark N5OT
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