On Friday, March 30, 2018 at 12:58:52 PM UTC-5, M.Joshi wrote:
Hi,

I'm trying to repair a meter that has had a couple of AA batteries leak.
I've noticed that the leaking electrolyte from the battery over-time
has found its way to the power input solder wire connections on the PCB.


Could the electrolyte migrate via the wires from the battery terminals
to the PCB connections? The wires are fairly long.




--
M.Joshi

Liquids can wick thru stranded wire just like water thru a straw. I've seen it many times on vehicle wire harnesses. Usually at one end there is a sealed PCB enclosure that is creating a vacuum with temperature changes.