[Elecraft] noisy fans??

[Robert Redmon]

I just finished assembling my new K3, and all is working well....except 
that the PA fans are very noisy. Actually, the normal fan noise is not 
bad unless you set the fans to PA Fn3 or 4. However, even at the lowest 
setting, they make a kind of clicking or buzzing sound that is very 
annoying. I originally thought it might have been one of the fans 
lightly touching one of the wires or cables near them, but I took the 
top off and checked and that was not the case. I don't think they made 
this noise when I did the fan test. Any suggestions?

-- 
73, Bob K5SM