rechecked everything and started a cycle with no change, water dribbling out of venturi, manually advanced the gear mech and suction started! the rotor has been replaced but didn't solve the problem. is there a chance that the gear has become misaligned?
This tells me the rotor shaft is twisted. If the unit, while in brine draw, will not draw brine, but will if you turn the gear a little, then the rotor shaft is twisted.