Quote:
Originally Posted by Jon A.
That being said, am I correct in assuming that my Heathkit GR-2000, with its RCA-design SCR sweep also uses this HVSD scheme? I can't keep horizontal locked on that thing and when it goes askew a transformer on the horizontal out board makes an arcing noise.
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Easy test is put it on your variac & turn down the voltage. If it clears
up its either too much HV or a fail in the HVSD. The ones I remember
were the 19" delta tube sets. A shorted pass transistor was almost always
the culprit. This chassis IIRC was only in 19" & didnt use SCR's. Twas
my favorite 1970's RCA.
BTW Maggy can be added to the list. IIRC it was the ones with the
703744-## PS boards. Didnt stop them from cutting the neck off CRT's.
Since Zenith sold 20%-25% of sets then they took all the blame.Maggy
had the horz shift & a 4 lead cap to prevent catastrophic failure. Didnt
always work.
73 Zeno
LFOD !