[codefox1]

Just replace the parts if you'e got 'em. I've spen enough hours grinding down old flimsy circuit boards, replacing failed traces by fine wires wound around components stuck through remaining holes in the plastic, and washed away again with whatever solvent would work without melting the plastic. The components themselves, unless unobtanium, were never of any concern.

Can't think of any story told here or anywhere else that Freeze spray actually helped anyone beyond the cost of the can and time spent using it, but we'll hear some stories I'm sure.

One technique I have used especially on smaller circuit boards is to use an old pencil iron, maybe file down it's hopelessly corroded tip to nearly a point, plug it into my stupid ancient lamp dimmer outlet, get it to the point where I can work the thinnest multicore solder I have to the beast at hand, get the bench well lit, use a pair of magnifying glasses and take it slow and even. If you can create or recreate a silvery band across the original traces from point to point, you are probably OK. Seems like patience is a virtue, but sometimes, a step happens all at once, so just back off then, and see if you have it.

All bets are off on multi circuit layer printed circuits, that's above my pay grade. You'll probably be charged to dispose of that stuff.