Thread: Zx81
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Old 21st Apr 2020, 10:32 am   #252
Slothie
Octode
 
Join Date: Apr 2018
Location: Newbury, Berkshire, UK.
Posts: 1,287
Default Re: Zx81

The problem with nail varnish remover is that it is acetone based which attacks plastics and unless you were very quick to remove it i imagine it will dissolve screen printing and solder resist. It also usually contains. Oils to mitigate drying of the skin which might be annoying to get off. You could try meths or surgical spirit which are similar to IPA and more likely to be lurking in a cupboard or the local chemist (although ive not tried buying meths since the 70s when I had a mamod steam engine!).
Looking at the photos theres not too much flux residue and i'd probably leave it if I didnt have anything to hand. The main risk from rosin flux residue is that in a damp environment it can absorb moisture and become corrosive and possibly conductive - but hopefully this board wont be kept in a damp place! I have circuits i built in the 80s with flux residue without any detectable corrosion because they have been kept dry.
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