I'm still trying to figure out what's wrong with my Hantarex MTC 900.
Previously, when I powered up, for about 1-2 seconds blue sparks appeared in the cathode tube .
I was able to disable the shut-down circuit.
The only thing that changed after that, was the fact that the blue sparks ( along with a buzzing noise ) remain in the cathode untill I power down.
Does anyone have an idea what to test next to pinpoint the problem ?
Does it sound like the LOPT has given up ?