Lots you can do!
It all depends on how handy you are and how many risks you are willing to take.
Have and assistant open and close one of the other slides several times while you observe how it operates. What are the sounds of the motors and gears/cables/clutches during normal operation? Can you see how the parts move?
Then observe how the faulty one sounds/moves. Look for misaligned or loose tracks, cables or cogs. See if a critter has left a nest in some part of the mechanism.
If you get daring, find and remove the access covers for the drive. See if there are missing or loose screws.
I consider myself very handy and will disassemble brand-new things to fix them in order to avoid a trip to the dealer.
Know where you stand before ripping up the carpeting...
TT 2015 19RD "TheJayco"
TV 2003 F-350 "Montblanc" - Housebroken chore truck
Sitting in The Cheap Seats.
And proud of it!