[TinCanAlley]

Originally Posted by Username1

At this point, I am going to assume your 125v source may be 140V.
You are also seem to be having different readings on your two pieces of test equipment. You will have to figure out how you want to deal with that.

I would check through the low voltage power supply where the 125v comes from, and check through the voltages listed there, there should be 4 or 5 low supply spots you can test, Use both your dmm, and the scope on DC, see which one you are more willing to trust. If that 125v is way off, then your HV may be using too much power and creating that ring just because the voltage is too high....

If you can, please post the power supply circuit, lets see if its a doubler with a possible bad part making too much voltage.....

I'm sorry to be casting doubt on your test equipment, but I have been there before, it may seem to be a stupid step, but we have to follow the evidence we have to find the real problem.

I'll check all the points of the 125V from the point it leaves the transformer to various points using both DMM and scope.

I've attached a pic of the power supply section.