In Australia there’s this product ; https://awareenvironmental.com.au/product/sticky-spot-goo-dissolver/
It’s citrus based but I haven’t had any bad effects on PCBs. It does affect some styrene plastics but in general it’s safe and very effective. If you aren’t in Aus, a similar citrus based product should work - just my experience. David Collins HP Computer Museum > On 28 Aug 2019, at 10:39 am, Jules Richardson via cctalk > <cctalk@classiccmp.org> wrote: > > > I picked up a couple of HP 5036A logic trainers today, both of which have had > goopy decaying foam come into contact on their PCBs. What's effective at > removing it? I've only ever had problems with it in locations where I can use > things such as citrus-based cleaners, but I'm a bit wary of using those > around a PCB. Is regular Dawn/water likely to work? > > thanks! > > Jules > >
