"MoiInAust" wrote in message
...

"Piero Soldi" wrote in message
news Hi,
probably a gassy 6H6 ?

Cheers,
P.

Thanks. Yes, I thought that possible but according to my AVO 160, no gas
on any valves! I'll try that again with some replacements...
Further to that Peiro, there is no provision on either of my valve testers
to test diodes for gas! I always understood that was a problem if there was
grid current but of course in a 6H6 there are no grids!