Sony Trinitron Monitor

I have a 19" Sony Trinitron Monitor which since before its 3rd anniversary,
has been getting dimmer and dimmer. In order to use it, I've had to
maximize contrast and minimize brightness. The color rendition is fine, the
picture is sharp. Just dim. On a dark background, you can see retrace
lines. Boy, it's been decades since I've seen them.

Just wondering whether there are any user-serviceable parts that I can
replace. Thanks for you input.

Hank



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