Chances are you are only reading this if you own one.

U installed mine tonight. It accidentally powered up while I was connecting it to the mount. A few minted later I could not get it to power up again. I checked the boats fuse panel and the fuse is good.

Double check connections. If you have a volt meter, check to see if you have voltage at the power plug. Is there an in line fuse? If that is good then you should try a soft reset, and if that does not work, a hard reset. That should fix the problem. You can google how to do the resets, it varies by unit, but they are easy to perform. If none of that fixes the problem, than I guess it must be the unit.

I will double check all above thanks.