Where to start Fuel Pump on Trailer is not working

So Pump worked fine all weekend. Got home to fill up sleds in trailer and it turned on and then shut off 2 seconds later. Tried again and nothing. Waited 10 minutes and same thing it turned on for a couple seconds then shut off. Waited again and it actually worked and I filled a couple gallons into a can. Next day same symptom's. Is it most likely a bad pump motor going out? I would rather check all my other bases first as I have about 40 gallons of fuel in my tank and really don't want to have to drain it if it might be something else.

Checked for power and nothing. Checked fuse and looked ok. Changed it anyways and it worked. Glad it was a easy fix!