Paasche D500 Compressor problem

    I've owned a D500 1/10 H. P. compressor with a paasche VLS airbrush for about 2 years now.  Today I was airbrushing for about 30 seconds when the compressor suddenly cut out.  I have never had this problem before.  I waited for about 10 minutes thinking that there was a chance that the compressor overheated.  After 10 minutes had elapsed, I plugged the compressor in and it was working normally.  I hooked up the airbrush and started spraying.  The second I stopped holding down the air button, the compressor cut out again.  I waited another 20 minutes but the compressor still does not work.  When I tried to plug it in, the compressor only makes a clunking noise and hums.     I've always followed all the directions in the instruction manual.  I've heard that if you repeatedly start the compressor with the bleeder valve closed the compressor will eventually short out.  However, I have never done this. Can you tell me what the problem might be and/or if there is a way to fix it?