[radiotvnut]

The only one of those sets that I've seen with a bad flyback was due to a shorted tripler. When the flyback shorts in these, the circuit breaker will trip within a few seconds of turning it on. The flyback could be bad; or, the technician could have simply told you it was bad. It's not unheard of for technicians to claim that a major part is defective when they really don't want to fix the TV to begin with.

What actually happens is the HV tripler shorts; which, draws too much current through the flyback. As a result, the flyback overheats and shorts; which, shorts out the horizontal output transistor. If you pull the HV input lead from the tripler and replace the HOT, the set will come on and you may get a little HV coming out of the flyback; but, the flyback will become warm to the touch and trip the circuit breaker on the rear of the set.