Wont spin. Motor turns, does wash,drains etc.Changed brushes although plenty left on old ones.Checked filter,gunged up,removed hose to pump and washed out, please help! Have checked resistance on spin speed, all seem ok. have removed spin speed selector 2 pin plug, shorted out terminals and run machine, no different. there is 240 volts at motor plug on 4 of the 6 terminals, nothing on 2 blue wires.