Is there anyone who could refurbish a Sony CVM-1225?

[vintage.digi]

Hello!

I have a Sony CVM-1225 that I love very much. It's my ideal bedroom TV. In fact, I like it enough that I have two.

There's nothing too seriously wrong with either of them, but they have their quirks. The one that I'm using now will eventually fade to black if watching an RF source. It will do this thing where something resembling static starts to take over the picture, but the "static" is black. It will have these black horizontal lines in the screen, the screen gets shaky and eventually they take over and the picture disappears. When using composite in, I've seen this effect start to happen, but it always goes away quickly.

I don't recall off the top of my head what was wrong with the other set, but I do remember they both had knobs which would work inconsistently. I think the other set would tend to want to go to black and white unless you tweaked the color knob just right.

I'd love to have both of these machines serviced so that these issues could be remedied, and so the TVs could have preventative maintenance so I could continue to use them for a long time. Is there anybody here with the experience and skills necessary to do so?

Thank you!