Cleaning circuit board based chassis?

[RetroHacker]

Well, I'm back... I've been doing my best to get myself organized enough to be able to get back into my hobbies of collecting/fixing old TV's and old computers. I finally got my workbench clean and organized, and I'm ready to start restoring a set I've been wanting to get going for a long time. It's a 60's GE set, 21" 110 degree tube, with a really wacky 9"x21" oval speaker. It plays great, gets a sharp picture, and tuning is OK. The tube is good and strong. Only problem is that the picture is smashed to about 1/2 the proper height, and the whole thing needs a thorough cleaning.

The chassis is a metal frame around a large printed circuit board, and it's covered in grime, dirt and more grime. The sets I've worked on and cleaned have been metal chassis types. What's the best way to clean a board like this? It appears to be phenolic, but might be an early fiberglass type board, I'm not sure. It's hard to tell under the crud. I can't even read the values on the resistors this thing is so filthy.

Also, in general, what other advice on cleaning sets do people have? I've been using the time consuming method of carefully cleaning a metal type chassis with paper towels and alcohol/windex. Most of the time I wind up replacing all the paper capacitors, and the rest of the components I typically leave alone. But in this case, with the circuit board chassis, I want to clean off resistors so I can read them, but not so that I clean the values off. Likewise with other parts.

Tubes I also typically leave alone unless they're completely filthy, since while the glass polishes to a nice clean shine with Windex, the numbers wipe off too easily. These are completely filthy. Any ideas? What about picture tubes? What can be used to clean a picture tube without cleaning off the aquadag coating?

What about other components? Wire? I swear this set looks like it was stored in a barn for years.

-Ian