Is transformer failure a rare occurance in a Tek
'scope, and is it
usually caused by some unusual catastrophic failure in the power
supply?
Not too rare. It happens enough that there is a small market for
Tek replacement transformers. I can't really say if they fail because of
the "usually" part, but I suspect that most Tek transformers can't
tolerate catastrophic failures.
William Donzelli
aw288(a)osfn.org