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Old 29th Feb 2020, 3:11 pm   #4
Join Date: Jun 2015
Location: Biggin Hill, London, UK.
Posts: 4,024
Default Re: Pye VT4 - no EHT

You could disconnect the EY51 heater wires (set turned off of course) and then

a) check the continuity of the heater winding (it'll show as a dead short on any normal ohmmeter, it's just a few turns round the LOPT core, I think).

b) power the EY51 filament from a 6V PSU or battery (again, set turned off) to see if it glows and how bright/visible it is
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