What Starsekr said..
I had solenoid issues early on and downloaded and studied that logic board .pdf closely. Whoever designed it did a pretty good job. There are LED's showing the command, and LED's showing the output of the control relay. It may be a hydraulic issue, but you need to get through the control logic and make sure its doing what it's supposed to. I colored and noted the various LED's on a .pdf and posted it here years ago, but it's rather hard to find on an iPad in an airplane..