Not sure if anyone can really help, but I figure I would still throw it out there. last Christmas I got a compressor for the purpose that I figure it would be useful for the simple things like filling car tires and maybe one day use it for a nailer or or something. Well, I was ultra lazy and never bothered to get a hose ofr it and it just sat in the garage until today. I am ready to hand doors and got a finish nailer, so I needed a hose and the oil for the thing. I got home and had to laugh because I realized I needed another piece for the hose to connect to the compressor and the tools. not a big deal, so I proceeded to fill the thing with oil and figured I would at least test it to make sure it fills. Well, I plug it in and turn it one and instead of making the loud hammering noise that you hear as it fills it made more of a loud hum type sound, nothing harsh and then the breaker on the compressor tripped. I turned it off reset it and tried again with the same results. Since I have no idea about these things, I unplugged it and left it for now and plan to call the manufacturer tomorrow to see what the deal is, but before then because I am inpatient I figured I would throw this out there to the community to see if anyone else has ever experienced such a thing and see if anyone had any idea about what might be wrong and how I might be able to go about fixing it. I figured many folks on here have used such tools enough in their own work so they might know something more than me. Thanks guys, hopefully we can get this resolved...