The Aquadag coating on the outside of the CRT is the negative plate of the HV
filter capacitor. If this is not solidly connected to the HV return, you will
have your 25 kV+ trying to go where it should not be. There should be a wire
solidly attached to the CRT neck board or chassis. Without this, voltage will
build up until it is able to take some other path - possibly resulting in
damage to sensitive solid state components in the process. Therefore, is is
important to rectify the situation.
|NotTaR of Television Sets : Arcing due to bad connections to or disc..
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Warning: If you find this disconnected, don't just attach it anywhere. You
may instantly kill ICs or other solid state components. It must be connected
to the proper return point on the CRT neck board or chassis.