On 7/6/2011 7:25 AM, Stormin Mormon wrote:
* Dust collects on the fins, of the fanblade. Some of the
dust may have shaken loose. Dust interfered with air flow,
and makes the blades off balance.
* Fan blade can rub on other parts of the unit.


I wonder if he had a wasp nest on the fan blade? :-)

TDD