We've got a Harmon P43, 7 years old. Plugged it into a surge protector a few days ago and it only buzzes, the blower and auger won't start. Pulled it from the surge protector and plugged directly back into outlet with same result. Now it won't do anything but buzz. This happened last year after a power outage and it just seemed to "fix itself" after a few days of being off and unplugged. That magical solution doesn't seem to be happening this time. Anyone have any ideas?