White deposit on PCB?

[paula at synth.net]

Same in the UK, it's REALLY hard to find now.
But I can buy 5 litres on ebay for next to nothing... go figure?

On 2019-09-11 08:38, Joost Schuttelaar wrote:
> On 8 Sep 2019, at 13:10, Joost Schuttelaar <joost at joostschuttelaar.nl> 
> wrote:
>> 
>> Thx Paula! Solder joints look fine, but let’s see after it gets 
>> cleaned up…
> 
> Isopropyl is impossible to find in The Hague :) had to order it…