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Heatercathodeshort · 30th Apr 2014, 3:10 pm

This is indeed odd. If the EHT overwind is O/C within the winding it would arc furiously when operating. If it is not arcing the EHT rectifier should still be lit if the line timebase is functional. You do not need the overwind to light the EY86/EY51. I presume you have continuity between the PL81 and PY81 top caps? J.

30th Apr 2014, 3:10 pm	#23
Heatercathodeshort Dekatron Join Date: Jun 2005 Location: Warnham, West Sussex. 10 miles south of DORKING. Posts: 9,147	Re: Is it a Bush TUG.68 ? This is indeed odd. If the EHT overwind is O/C within the winding it would arc furiously when operating. If it is not arcing the EHT rectifier should still be lit if the line timebase is functional. You do not need the overwind to light the EY86/EY51. I presume you have continuity between the PL81 and PY81 top caps? J.