The trouble is this set has something thats just off. Odds are
its not a wide open resistor or dead shorted cap. If you have
a scope look at the drive. Should be one ( or 2) BIG spike
& otherwise clean.
One thing that gets missed is the hoz blanking tube. That can cause some
strange problems. Change it & check around that area. It may be transtorised
also.
73 Zeno
LFOD !