Turned on my 28 RT today and the motor hummed for a minute and then tripped the thermal overload.

I can turn the motor by hand and it seems normal resistance. When powered, it just seems to wiggle back and forth. Giving a push in the proper direction does nothing. 

(On another M28 , the motor would not run until you gave it a push - then it would run. Replacing the motor start cap fixed it.)

But on this 28RT, giving a push doesn't make it run.

Does this sound like the motor start cap?  Any good sources for M-S cap?

Thanks,  

Duncan

K2OEQ