Vacuum cleaner won't shut off.
I have few questions about my vacuum cleaner. First when I was using it this morning, the sliding on/off button got stuck and wouldn't shut off so had to pull the plug to shut it off. Do you think WD40 sprayed in the area of the on/off button would work? Also noticed that it seemed to be working harder or sounded that way plus really holding onto the rug. I had it at the right carpet selection. And the cord was hot when I pulled it out of the wall to shut it off. Is this vacuum cleaner toast?