Filter Queen Powerhead Not Working

Question

For quite some time, the plug in for the separate powerhead on the wand hasn't worked right. It would fall out sort of and not work. I would have to keep shoving it in to keep it running. Today it won't work at all. I tried cleaning the contacts and took apart the handle to see if the switch was still wired. As far as I can see, I don't know why it isn't working, but I think the problem is in the handle switch. Any ideas?