Vintage Synth Repair

> look corroded and a few to the point they are damaged. good to know 
> about the solder not melting problem as i anticipate what to do next.

I've used careful scraping, solder (and possibly soldering flux) and 
q-tips soaked in rubbing alcohol (isopropanol) to clean up the leakages 
and corroded spots.

Bits of glass fiber circuit boards are good for scraping/rubbing away 
most obvious bits of dirt. There's some kind of a resin in these boards 
that gently rubs of the corrosion as well. Once the surface is somewhat 
clean, tthe remaining dirt can be burned away with the help of the flux 
in the solder. Then, excess solder residues can be cleaned with solder 
wick and flux residues with isopropanol (f.ex. if your solder isn't of 
no-clean type).

If you want to see an example of what this process looks like, I have a 
post about it on my blog:

http://wp.me/pJHQM-et

Got one Polysix battery case waiting to be documented to the blog as 
well, but that's way further down the timeline.

.Arto.
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