When my air conditioning comes on, I hear a loud buzzing and notice the condenser fan is barely spinning or not spinning at all. I used a Fluke 88 to measure capacitance on the start/run capacitor separate from the system, and it measures within a few percent of the label. I have the full 230v going to the fan terminals, so I assume I have a faulty motor.
My question is how do you choose a replacement motor? I have a GE 5KCP39JFV504S currently, and I'm assuming I would find an aftermarket replacement by a different manufacturer. I know I need a 230v 1/4HP 830RPM CW spinning motor, but other than that I don't know how to shop for one that will fit the blades and cover grate properly.