Problem solving...   Decades ago, my garbage disposal stopped  working.  Turned the switch - got just a hummm.  Bummer.  I was  distressed, because at the time I hadn't the cash to buy a replacement.   This is notwithstanding the simple fact I didn't know how to install  one.    Nonetheless, I called my local appliance dealer to come and fix  it.  He took one look.  He pulled from his kit a giant screw driver and  plunged it down, deep into the disposal and nudged the blades just a  bit.  It then worked fine for the time I lived in the home - on Berkeley  Street.  But I remembered this trick.  In all the intervening years I  had no problems with garbage disposals until today.  Dad-gum thing  stopped working!  My solution:  I went to my garage, loaded with unused  tools of all sorts, fetched up a giant screw driver, plunged it  deep-down, and nudged the blades just a bit.  It now works again, just as it did before...
Random thoughts and used ideas