COSSOR 938

< Back

My trouble is loss of EHT. I get a spark from
the anode of the EY51, but not from the cathode.
I tested the voltage across the heater of the EY51
and found it to be only .2 volts. The line output valve has been tested and found to be O.K.-
R. T. Pike (Cwmbran).
We advise you to check the EY51 heater with
the EHT lead disconnected from the tube. A
visual check is better than a meter which might read anything. The filament stfould glow a cherry red.
If removing the EHT lead does, in fact,
restore EHT suspect the tube for heater -cathode and grid- cathode shorts and see that the ion
trap magnet has not become displaced.

Table of Contents

Leave a comment

I have read the privacy policy and accept
Read our privacy policy

This form collects your name, email and content so that we can keep track of the comments placed on the website. For more info check our privacy policy where you will get more info on where, how and why we store your data.

This site uses Akismet to reduce spam. Learn how your comment data is processed.