The end cap on mine broke one day when I was using it. I was using air tools and realized the compressor should be running but it wasnt. I found the end cap mounting tab was broken and had tilted away from the motor. The end cap is made of plastic so I figured it just broke from the vibration. I did a repair on it and its been working fine since then. The end cap holds the startup capacitor and it mates with a set of contacts under the end cap. Now I see how this can cause a fire. I figured mine was an isolated failure but apparently not.