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Old 29th Feb 2020, 3:30 pm   #2
high_vacuum_house
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Join Date: May 2003
Location: Rugby (home) and all over the country for work
Posts: 1,356
Default Re: Pye VT4 - no EHT

Good afternoon,
I presume the EY51 heater is lit, the valve hasnít lost its emission or there is a failure in the EY51 heater winding on the LOPT. I would check all these things first as these would cause no DC output from the cathode of the EY51.

Christopher Capener
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