I had same problem on my barker 3000 Jack for 2014 FC this week. Bought new switch on Zoro.
https://www.zoro.com/power-first-tog...z9/i/G3457781/
$7.00 plus $5 for shipping so cheap I bought spare as well. Ordered on Thursday much to my surprise it arrived on Friday. Installed yesterday afternoon. It was an exact fit. Problem solved
If its not the fuse you can remove the switch and check with a meter or I removed fuse removed and alligator clipped and electrical taped the appropriate lugs together then reinstalled fuse . First the up ones then the down ones. The jack worked fine in both directions so I knew the switch was bad. Please BE CAREFUL if you try the hard wire test method..... get the connections right or as the song goes "smoke get in your eyes"
. If your not sure you want to do this $13 for a new switch is a cheap way to see if the jack is bad.
Wish I could take credit for the find but I got the tip from another thread on the same topic.
Cheers
Benn