It's questionable as to whether the machine is filling. It doesn't sound like it used to, and of course the dishes aren't clean. Just recently, the soap dispenser failed to open as well. I took the back off to see if anything was corroding and it appears as if the gaskets around the dispensers are bad. See pics. The machine doesn't leak. I took the spray arm apart to make sure nothing was clogged, cleaned the screens. What else should I be looking for?