Hello
Welcome to JA
If you can here the motor run but the top is not moving
and its not real cold out below 30
There is either low hydraulic fluid, or a hydraulic cylinder is loosing internal presser and a seal is leaking
I would check the fluid first If fluid is fine then you will need to pull the hydraulic rams off both sides and bring them to a hydraulic repair shop have the internal seals replaced
Let me know if i can help more!
Hart
ASE Certified Technician
Ase Master 29 years
What can i explain for you
Thanks Hart