I was able to drain the tank fully and try to flush any particles out of the system. THe pressure did go down on the gauge and the the valve read zero. I inflated the tank up to 38 psi and once the faucet ran the psi went back down to 20 psi. The pressure at the faucet actually got worse this time. I did notice that the tank was empty after draining. It didn't seem like it filled anymore after I inflated it to 38 psi and turned on the power. I really hear no sound such as cycling, pumping and maybe a little of the water coming from the outside pump. I'm going to try to get a voltmeter to measure the power. I didn't replace the pressure gauge. It did look like it was recording the correct pressure because it matched the tire gauge. Does the pressure gauge feedback any info to the switch? I didn't have time to get a replacement but maybe I'll buy one with a voltmeter tomorrow.