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FERNSEH · 18th Jul 2016, 10:39 pm

Hello John,
Drama from me, surely not. OK then, News Flash! The failed line oscillator was caused by a faulty 20L1. I've replaced it and now there is drive to the grid of the 20P4. However, only a tiny spark is present at the U25 EHT rectifier. Remove the top cap from the U301 boost diode and the EHT comes up. it's gotta be a short circuit boost capacitor.
That's it for now, will return to the set tomorrow.

DFWB.

18th Jul 2016, 10:39 pm	#12
FERNSEH Dekatron Join Date: Mar 2005 Location: Gateshead, Tyne and Wear, UK. Posts: 7,444	Re: Ekco T221. Hello John, Drama from me, surely not. OK then, News Flash! The failed line oscillator was caused by a faulty 20L1. I've replaced it and now there is drive to the grid of the 20P4. However, only a tiny spark is present at the U25 EHT rectifier. Remove the top cap from the U301 boost diode and the EHT comes up. it's gotta be a short circuit boost capacitor. That's it for now, will return to the set tomorrow. DFWB.