|
I spotted the spark, under the base of the 1B3GT tube, which is mounted above the chassis on a little phenolic "table." Looks like a pain to lift that assembly out, but you gotta do what you gotta do :-)
I'm still puzzled by the behavior of the brightness control. The CRT reaches maximum brightness -- which isn't all that bright, even tho' this is my precious brand-new CRT -- about midway as you turn up the control. Then it decreases and goes back to dark as you turn farther. The sparking doesn't occur until it's turned up all the way and the CRT is completely dark again. Oh well, perhaps this will become more clear after I get things pulled apart.
|