Re: Pye CTM4.
Wired in the substitute transformer this evening. Using the Rank-Bush-Murphy EHT meter to monitor the results I find that just under 11KV is available at the cathode of the EY86 rectifier, just about right figure for the 14" CRT.
It's likely a higher EHT voltage will be possible when the CRT is connected.
Tomorrow the chassis will be refitted in the cabinet so then we'll find out if the French 819 line transformer will work properly in the 405 line CTM4.
At least this evenings experiment proves that the original line output transformer is faulty.
The attachment shows a similar line output transformer which was used as a substitute for the original transformer in a Pye CTL58F.
DFWB.
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