Ok, possible motor windings/ electrical
fault so unless you want to spend a bit of time researching how the unit works , I would suggest you call a pro in
But before you do, check there is oil
in the reservoir at the correct level, if it is - then I would say the hydraulic system has a valve fault.
If the level is low and no signs of oil
around the trim unit you may have a leak in the ram seals
or one of the pipes on the shield- haul out
Sent from my iPad.......i apologise for the auto corrects !!!