Quote:
Originally Posted by zeno
Good tips so far. Next step is check the 130 V line. Put meter on that
and slowly turn up variac. The 130 V must not go over 130 V. If it does
you have a regulator prob. If it shuts down on 130 V its a HVSD problem, not shown on the schematic, probably a bad zener diode.
Zeno  |
With the Variac set at 90VAC I measured the 130V at 124V. I raised the variac to 100VAC and the 130V was 138V. I didn't go any further than that but I guess that confirms it's a problem with 130V regulation?
Should I adjust the 130V pot? It's got some sort of goop on it to keep it from being adjusted