When we got there the cable snapped, I refused to leave so here is our temp fix last year. Been replaced now ready for this year.
I keep a set of ABS pipes in the camper and store them in an old lawn chair bag just for emergencies. These got us through our entire first season of pupping with a busted cable. 1996 Viking 2060ST / 1997 F150
If you have a helper, one person turns the crank while the other assists by pushing up with a pipe. If by yourself, use different lengths of pipe starting with 6" piece. Crank a bit, lift up the low corner using a 12" pipe, crank a bit, rinse and repeat with 24", 36", 46" pipe until you're at full height. It's tedious by yourself but quite easy to do. It's a little tricky to get started but with three still raising properly, lifting one corner is easier than you might think. 1996 Viking 2060ST / 1997 F150