Lost veritcal boom movement w/no clues or noises, LT185.b compact track loader

[ylekyote]

She picked up a load of top soil and I drove about 300 yards to dump it on my ditch bank and the bucket would not go up. No noise, no anything. Tilt and everything else is normal. The foot pedals are free and clear of dirt under them. I have full hydraulic fluid. No breaks in the lines. The left pedal (vertical movement) feels locked, like it does when my seat belt isn't clasped. I cycled ignition and drove the loader around and that did not help. Also there are no dummy lights on and I cycled the safety brake on/off and seat belt clasp several times too. Has anyone an idea of what I can check next?