This cheap compressor quit some time ago, finally took it apart - I was sure it was seized, but it was actually cracked frame. You can see it @ 3 o'clock. Due to the crack, the field moves the rotor off center and the motor will not spin
To prove it, I used C clamp to hold the tab and sure enough the motor run. For permanent -haha - fix I driilled a hole and used a piece of wite. Looks like it holds, we shall se