I've got a simple board to repair (a switch/junction board for a fancy bike light). The wires to a DC connector broke because of insufficient strain relief.
It's a trivial job, except there's a paint-like coating on top of the solder joints. I've come across conformal coatings all over high-spec SMD boards, but nothing quite like this partial coating over big joints before. It's not for waterproofing because the switch on the other side of the board is a simple surface mount push-button, not sealed; the housing is the (moderately) waterproof bit.
It scrapes off the flat surface of the board but not so well off the actual solder. I'm wary of just sticking an iron on it, mainly fumes but also contaminating the new joint.
Currently I'm thinking of picking off what I can then working somewhere very well ventilated, but is there a better approach ?
