Motorola ts907 low hv

[Yamamaya42]

Originally Posted by timmy

As it is now I’m going to look at the convergence panel which has 5 200v red caps. It also has a selenium diode don’t even know if that maybe shorted there was no smell to say it burned up but this voltage drop is when the convergence panel and tuner is plugged in. But have to check everything maybe this route will show something.

That most likely won't get you anywhere.

there is no bias going to the convergence circuits at all, it's fed by horizontal and vertical pulses from the respective transformers. No boas needed at all
the vertical output has a convergence tap on it, the horizontal shares the same feedback winding on the flyback that is used for horizontal AFC and color sync.
in fact, you can unplug the convergence circuits completely and still get HV, you will most likely see a partial collapse of vertical range.