JLG boom ( 2012 600AJ) moves itself: operator in the basket, engine on, pedal on, drive joystick pushed towards the operator - boom starts moving ok, operator released joystick - boom moves opposite direction ( boom moves itself without operator touching the joystick). Any ideas? Video Link: https://photos.app.goo.gl/oUNjbqajaYPFv4ky7
Sounds like some type of return to neutral lock problem.
Yeah, I would open up the console and look to see if the forward switch contacts are either stuck engaged or are getting pushed engaged by the stick that isn't zeroing.