I would start by checking all linkages, if you have manual controls, for anything loose or any damage or cracks.Any ideas where to start? It doesn't have the inline filters on it either
This may sound dumb but which solenoid?Assuming there are no trouble codes, and your BICS module is not showing activated ( I believe you have BICS on that machine?), I'd refer you back to what brdgbldr was talking about. If your boom is working properly, that usually means your charge pressure is ok, but never hurts to check that too. Sounds to me like you got a solenoid that's not working, or not working all the way at least. Do you have the book for this machine?