So, having pulled the CRT now , I was surprised to see that the ground braids
seem to be held against the aquadag by only the pressure from a couple foam
blocks! In my unit these aged foams are deformed and brittle. This would
seem a good thing to add to the check list for looking at these…
I wonder if this explains why many of these I encountered back in the day in
university terminal rooms and such were suffering from HV “snaps”? I had
always assumed it was just dust / grime / spilled cokes… :-)
Also, after a closer look, I’m surmising the red goo around the anode cap to be
dielectric grease put there on purpose, and not degradation of the cap itself.
—FritzM.
