I have an underwater light that one of the batteries either exploded or salt water entered the battery canister. It has peeled off the green coating on what I consider a circuit board. It is basically a rotating disk that allows the canister lid to be tightened without the battery having to move. I believe all the traces are still good and there appears to be no shorting of the terminals. Was wondering if anyone had recommendations for restoring the green covering/paint on the boards?
UV solder mask will work fine (cheap stuff works fine) - just ensure the UV light you get is actually in the UV wavelength otherwise it won’t go hard.
You might also wanna get some silicone and apply that aftewards ontop to increase the waterproofing too.
Might be worth putting your meter in continuity mode and ensuring all those traces have a continous path prior to putting the UV mask on.