My Maytag Centennial washer MVWC300VW1 is stopping mid-cycle and won't drain, it makes a buzzing noise for a few seconds when it stops agitating and then stops. If I try to manually advance the dial nothing happens. I can manually drain it by lowering the hose and I've inspected for blockage and there's none. I have also replaced the pump and it's still doing the same thing. I've checked the lid switch for continuity and that appears fine. Any thoughts on what's causing this?