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Old 25th May 2020, 12:46 pm   #16
cathoderay57
Nonode
 
Join Date: Oct 2017
Location: Bristol, UK.
Posts: 2,388
Default Re: Vidor CN429 Help wanted

A few ideas: When you tried replacement valves was the DK96 included, and are you sure the replacement was serviceable? If the oscillator doesn't appear to be running, and the dc conditions as measured seem to me to be OK, then it looks like a capacitor has failed or drifted in value somewhere. Check the oscillator trimmer TC3 for a short. When you replaced the 0.05uF waxies was C9 included? Check the wavechange switch contacts for continuity. Change C6 and C7. Cheers, Jerry
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