I am having an intermittent stoppage of my Maytag MAH3000AWW, Ser # 18111546SW (Series 18, I think), just prior to the rinse cycle, still full of wash water. It happens in both the standard wash and delay mode. Water appears to be flowing into the machine normally (visually and touch verified at detergent fill, warm wash, cold rinse). Bleach wax motor operational. Door wax motor working fine (replaced a few years ago, w/R11), Door Locked LED on. Machine stops, alll lights out. Doesn't seem to try to rebalance prior to stoppage, so I think sensors working fine. Press Start/Stop and will complete cycle. Most likey guess is Machine Control Board, but it is expensive. Could it be water control valve?

Any ideas to confirm/diagnose?
Thanks!