On 27 feb, 21:50, Franc Zabkar wrote:
snip
A DC bias voltage appears to be injected into the vertical yoke via
R503. It originates from pin 10 of the FBT. Maybe the replacement FBT
is slightly different in construction, or maybe C564 is dry? Or maybe
you could play with the value of R503? I'd check all the caps around
the vertical IC before changing anything, though.

- Franc Zabkar

Thanks Franc. Will check that out. Also suspect r506 , 150k off pin 4
of the vertical chip, seems to be repsonsible for similar symptoms on
other models.
-B.