Quote:
Originally Posted by Notimetolooz
That divot thing is weird, I think it has something to do with the crt geometry, they probably will go away when you get other things straightened out.
I kind of suspect the horizontal coil also. Maybe you can localize the problem by using a small wooden dowel and tapping various components. Could be tube socket, capacitor, pot, etc. Is it still shock sensitive when you swap tubes?
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I think the divot is a "charge bubble", which was sometimes seen on un-aluminized CRTs during warmup or other times when the HV is not stable.
Agree.... tap everything in the horiz circuit.
jr