10-24-2011, 12:34 AM
To me it looks like there is more dirt then rust, a good cleaning will take care of most of it. The first thing I would do is take the dial off, sandwich it between two pieces of corrogated cardboard, and put it in a safe place. Then I would remove the tubes and try blowing off that filth with an air nozzle, outdoors of course. Some would differ with me over this but I would then give the chassis a was with some TSP or good soap to get rid of whatever dirt is left, since it will be a while before you power up the set the chassis will have lots of time to dry. With any luck there will only be a few spots to treat with some phosphoric acid or navel jelly and you can decide then whether it is worth dismantling the chassis any further to paint it..
Regards
Arran
Regards
Arran