Should one inject silicon into the compartment that contains the two convex metal plates separated by an air space, in the white circular plastic component that fits on the tail end of the television tube? The goal being to prevent gradual loss of focus (causing needing a while to warm up the TV) in humid climates. If so, one must be picky about the type of silicon, the sour smelling type used for caulking windows being a disaster apparently? .
inject silicon into TV focus?
Jan 05, 2006
2 Replies
I'm not at all certain what you're talking about, assuming for the moment this isnt a troll. What "two convex metal plates" do you think affect the focus? Focusing a CRT beam is generally done by "lenses" which are in reality electric fields established and shaped by structures within the electron gun. (Very old CRTs, and some specialty tubes today, used external focus coils which did the same thing via magnetic fields, but those are extremely rare now.)
If you're talking about leakage currents affecting the focus voltage supply (and thereby affecting the focus until the unit dries out and the leakage path goes away), then there may be situations in which the judicious application of RTV silicone (not "silicon") may help, but you need to know what you're doing here.
Bob M.
Absolutely not - it's a spark gap, intended to protect circuitry from CRT internal flashover.
Leave it strictly alone.
"Electricity is of two kinds, positive and negative. The difference
is, I presume, that one comes a little more expensive, but is more
durable; the other is a cheaper thing, but the moths get into it."
(Stephen Leacock)
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