Quote:
Originally Posted by timmy
I don't know but could the .002 ceramic caps in the horizontal be interfering with the verticle sync ? The correct caps that should be in the horiz is .001 but tubular type . Although the horiz is fine and stable. I can't find anything else wrong here and tried several different 12sn7 tubes and 6sl7 tubes also .
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Not likely... I would recheck the wiring between the sync clipper and the vertical oscillator tube... it appears that the vertical sync pulses are not reaching the vertical oscillator. Perhaps a side by side comparison to your VT-73 would reveal an error or wrong part.
Of course, a scope would tell you in seconds if the vertical sync pulses are wrong or missing.
jr
07-19-2017, 09:14 PM
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