[Geoff]

I'm working on my Philco 640 right now. I've tested all the coils and they are fine. Here are some of them:

[Image: http://antiqueradios.com/gallery/main.ph...alNumber=2]

I would like to clean them up a bit. I plan on using a soft artist brush to brush all of the dust off. This is not my first restoration so I know that some of these wires are very delicate so I will be careful. Once dusted, I was wondering if it would be OK to use isopropyl alcohol with a soft brush to clean them further. Something like this:

[Image: http://pugsandkisses.com/wp-content/uplo...st-P+K.jpg]

Or maybe spray them with electronic cleaner. Something like this:

[Image: http://www.frontiernet.net/~jcray/04F250...ing-07.JPG]

Philco coils are infamous for opening and I consider myself lucky that these ones are fine. To protect them going forward I was thinking that after I clean them I could coat them with connector coating:

[Image: http://antiqueradios.com/gallery/main.ph...alNumber=1]

Or possibly clear nail polish.

Assuming I am careful around the delicate wire leads, does anyone think that what I am proposing will cause any issues with the performance of the coils?

I would think it would be fine but wanted to get some feedback before moving forward.

Thanks,
Geoff