The lower the startup voltage, the longer it takes the super caps to charge.  Try starting at 12 volts and watch the current.  With the smoke unit off, about 0.3 amp is normal.  Press the direction button and see if it moves.  If it shuts down, I suspect a poor ground on both power trucks.

Was this used?  if so clean the wheels and oil pickup rollers.  Also inspect rollers.  I have seen frozen and or worn rollers and or corrosion in between roller and pin also effect power input from center rail.  If this is new, then it could be screws where black wires pickup power from truck block having poor contact.  G

Start up at about 10-12 volts and wait approximately 20-30 seconds for the sounds to come up.  It takes time for the supercaps to charge.  When you push the direction button - push AND hold it down for 2-3 seconds, then release.  This is the norm when you are operating PS3 in conventional.

good luck

bruce