I got tired of the little rinky dinky compressors they sell these days so I made me one. I had a 5hp campbell hausfeld that originally came installed on a 13 gallon horizontal mounted tank , its a great quiet compressor and fill fast but my take being a 13 gal was just to small, worked great as a portable when I needed a portable but I needed more air.
So my buddy had this Husky 26 gallon 1/3 hp thats only 6-8 months old and it died on him and he gave it to me. I got it running but I swear it took 20 minutes to fill the tank and if you plan on using the compressor it will run all day trying to keep up with you. That was short lived in my shop we ended up over heating and toasting the motor.
So now I go to pull out my old reliable campbell and start thinking about my tank I have had this thing for longer then I had my youngest son ...I am thinking this thing has got to be 20 plus years old, so I did a mock up in my head of what it would take to get it on to the husky talk.
This is where I learned about compressor systems and how they work. Before in the past I never cared..I plug it in it works and I didn't care how. But since I had to invest and make a repair I decided to learn a bit.
1st thing to check if your motor does not turn on is the pressure switch. You have two sets of wires that go to it..remove the plastic cover and put your meter on the plug side (hot side) and verify you have power. Now on the motor side with the switch off you should not have power turn the switch on and check for power coming from the switch to the motor. If you have power there when the switch in on then the problem is with the motor. My case it was the motor.