The start capacitor and/or the centrifugal switch may also be bad. A way to test is to turn the motor on and quickly spin the shaft in the direction of normal operation. Do this quickly after turning it on to prevent the windings from overheating. If it takes off and runs normally, then try replacing the start capacitor first. What that switch does is energize a seperate circuit for giving the motor the extra push needed to start under load. The rotational force disconnects the circuit once the motor reaches operating speed. If this is bad, it will just hum and maybe turn slowly trying to run. When the run cap blew, the strain of trying to start the motor could have taken out the start cap also. It is a good idea to always replace them both when one goes out. Good luck, hope this helps, John.