Battlezone Cabaret, 15" B-W vector monitor.
Power up is normal. Display is normal.
After 18-20 seconds, a faint arcing/sizzling sound can be heard
along with the normal vector clatter.
On powerdown, the sizzling continues for about 10 seconds after
powerdown before finally sputtering out.
No visible arcs in: HV cage, anode cap, DAG->chassis GND spring,
or inside tube neck.
Picture is crisp and solid at all times, regardless of arcing sound.
The last fix to the monitor was a while ago, and did involve the
removal of the HV supply to replace a couple of caps.
Q1: Is the arcing something I should be worried about?
Q2: What's the most likely cause of the arcing?
My hunch is that it's going on _under_ the anode cap - maybe some
crud or finger-moisture got between the HV lead and the tube when
I removed it to fix the HV caps. It's also possible that some of
the silicone goop may have been removed when I removed the anode
cap.
I think I'm on the right track, but before I get knee-deep in goop,
I figured I'd bounce my situation off the list first.
Thanx,
Doug.
-- dougj | @ | hwcn.org |
