Rear Jacks not working - sometimes

There are power gear manuals on line...are your two front slides hydraulic?..do they work?...it sounds like the control solenoids for the rear wont kick in..do you have an allen wrench to work the solenoids manually...and since they worked intermittently it sounds like a possible loose connection...go to the jack motor and make sure the connection is seated on the jack solenoids..the jack motor is behind the ac condenser fan.....this is the second compartment from the rear with the soda machine key that opens the door to the ac condenser..that opens also with the key...the jack mechanism is right there...