Slow projector fans - Lubrication?

[P3D Dr. George A. Themelis <DrT-3d@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

I have a question regarding motor fans in projectors.
I run into slow motors quite often.  Slow means that the 
motor turns slowly for a number of seconds and then it takes 
off.  Now I have a TDC projector motor that takes a full 10
seconds to start.  I tried lubrication and did not work.
Then I sprayed the motor with the cleaner used in shutters
to dissolve oils.  At first things looked OK.  However,
after the motor sits for a day or two, it goes back to its
slow start.

Questions:  Should the motor be lubricated and how? (some
motors don't have any holes for oil)  What causes this
slow start?  Is the projector in any risk when the fan
does not kick it for 10 seconds?

Thanks! -- George Themelis


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