If you have a volt meter or continuity checker. Check the switch. If you have a volt meter, set it on ohms and when the button is pushed it should read 0.00, if you have a continuity checker it should have continuity when pressed. Alot of volt meters have a continuity checker built in as well. When you re-painted the controller paint may have gotten into it and is not allowing the switch to make contact inside. You may be able to clean it with alcohol or nail polish remover. Be careful with either one as they can damage your paint job. If the switch is ok. Then check continuity on the wires. To make sure the didn't break internally while you were removing or replacing them. The solid core wire is more apt to break than stranded. But it's hard to get stranded that small and work with it.