Doorbell powered off after 1 day

I bought the video doorbell and connected it via instructions. It worked for 1 day. When I came home for lunch today I noticed it was off. I reset the power breaker, but no luck, I looked online and someone posted to plug it in via the USB port on the back of the doorbell to power it. I did that and the doorbell powered up and it works. My guess is the fuse wire that the instructions had me install is blown. Is it possible to get another one? I know the doorbell is functioning via USB power, so can I just direct wire it?

Never mind. It was operator error. One of my wire nuts on the fuse was loose. Problem solved.


Thank you for coming back and giving an update, glad you got it working.