Rebecca,
I feel your pain, we are currently stuck in Yuma with the same situation, no jacks and now no slides. Your hydraulic pump is designed to operate (according to our tech) at 3000 psi. After testing ours we found 500 psi at the pump. We are now trying to source a new pump. We had the coach in for repair of the SMC leveling system, it wouldn't go down and wouldn't retract. They got them to distend but not retract and after taking the manifold retract valve apart and cleaning it to no effect we left with no jack resolution. We had experienced no problems with the slides up to the morning we took it in for repair. Back at our RV site we discovered that now the slides won't budge either. The Techs response after taking a pressure reading at the pump was that the god of coincidence had killed the pump while he worked on it. I have no leverage to dispute this. He has a good rep in the Beaver community but a hearty shrug and sh*t happens is the best I got. He will help with part numbers but we have prior commitments and can't simply have the pump sourced and installed in the next 3 days. We are going to be stuck with slides in for at least 10 days after we get to Phoenix. Sometimes when they work on it things get worse. Have your guy run a pressure test on your pump (10 min.) before he tears anything apart so you know for sure.
Bruce.