21 Feb
2022
21 Feb
'22
7:42 a.m.
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.