I had a Lance with Atwood jacks for 20 years. The only problems I ever had were with the wireless controllers. These are reliable equipment.
First off, the Atwood manual says to unplug the jack when you will manually (or with a drill) raise or lower it. You've obviously got that figured out.
More importantly, it seems like all four jacks failing at the same time is not a problem with the jacks, but with the controller. You can test the jacks by using jumper wires from the battery to the plug coming out of the jack. If that makes it move, the jack is ok.
Here's how I'd troubleshoot my jacks.
- Start at the beginning. Check the power going to the jack controller.
The jack controller should have fuses and/or circuit breakers. Check all those.- the handheld part (wired or wireless) on newer controllers need to be paired and can lose their pairing. Try re-pairing the handheld controller
Check the power output at each of the jacks while they're supposed to be working- Check the continuity of the wires between the controller and and each jack.
If none of that works, like others have said, you can replace the Atwood parts with Reico-Titan. They sell a complete replacement set, or various pieces. If the jacks worked by directly jumping each of them from a battery, those aren't your problem and you can just buy the controller setup.