petrus bitbyter wrote:

This kind of failure is pretty common especially with coils and
transformers. In this components insulation tends to degrade partially over
time, usually depending on the temperature. So a transformer may look liko
te perform excellent while cold but fail when it grows warmer. Off course,
other components may fail the same way sometimes. I'm afraid you to lack
both skills and equipment to find out what component(s) are actually
failing. Even well trianed and equipped professionals usually dislike this
type of failures. And, you're right about the line output transformer.
Hardly a chance to find a good replacement.

OK, I'll pull the monitor unit out again to at least give the main board a
close visual inspection. Just my luck that the monitor is the only part of
the machine that I haven't got a schematic for.

Thank you for your help. It probably saved me a lot of messing about with
sync signals.

--
__ __
#_ |\| | _#