New to soldering, tried to desolder a mouse switch on a PCB. I thought i did a good job, but it's not working with the replacement. I did change it with a different brand of switch so not sure if that's the reason
OR
while desoldering, i removed also a metal ring from the joint in the back of the PCB? Is that an issue? That joint, the solder doesn't stay down but form like a bulb. If that the problem, which is most likely, is there a way to replace that metal ring? I thought most contact and circuits are on the front side of a PCB?