Wash TV Chassis

[atomicomatic]

I was on the Early Television website, and on a page with "restoration tips" is suggested removing all the tubes and actually spraying down the chassis with dishwashing liquid and water.

I have a 1957 Westinghouse portable apart right now which has a ridiculously dirty chassis. Normally I take a set outside, armed with an old paintbrush, and dust it off with the tubes removed. But this one is exceptionally bad. When I used to work on older computers, I took a 1977 Commodore CBM and used this same method, with no ill results.

Has anyone tried this, and if a set is thoroughly dried out in the sun, would it harm any of the components?