Seems the water inlet valve was shot. I'd replaced the Wax Motor and bought an upper spray arm but soap still wouldn't dissolve. Actually, wouldn't even leave dispenser even after Wax Motor replaced. Listening the the machine I couldn't hear water entering nor sloshing around. Hence, I order a water inlet valve and installed it. Most difficult task was disconnecting the water supply line from the inlet valve. I replace the supply line when assembling. So far, so good although I haven't ran a load of dishes yet. Just a run with an empty tub. All worked then.