MikeOnline Posted December 5, 2012 Share Posted December 5, 2012 Check that theres nothing contacting with the fan blades. Me and my brother used to shove lolly sticks in ours back in the 70'S. We once tried it with a screwdriver but it blew up, i think we made an electrical connection. In them days if we didn't know how something worked we soon found out.. ---------- Post added 05-12-2012 at 19:14 ---------- Try spraying wd40 on the fan bearings.It cured mine. Mek sure it's unplugged FIRST... Link to comment Share on other sites More sharing options...
alchresearch Posted December 5, 2012 Share Posted December 5, 2012 ...and cold. Link to comment Share on other sites More sharing options...
Jeffrey Shaw Posted December 6, 2012 Share Posted December 6, 2012 If it's on an uneven surface, that might make it noisier. Link to comment Share on other sites More sharing options...
carosio Posted December 6, 2012 Share Posted December 6, 2012 It might be that the end float (clearance) of the rotor shaft has worn allowing the blades to touch the caging, or the shaft bushes have worn allowing the rotor to rock up and down (usually after long use) with the same effect. If so, uneconomical to repair, unless you can move slightly whatever the blades are catching. Link to comment Share on other sites More sharing options...
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