Hello, so a wire snapped off and now I plan on soldering it back on. I know nothing about soldering but I will read up on it. However, there's this yellow glue all over the soldered connections. I'm assuming it's to further strengthen the bond. If I want to resolder am I going to have to get rid of the glue because it's covering the metal part that I need to connect the wire to. What is this glue called? How do I remove it if I need to?