The Ice maker quit making ice. I hear it trying to draw water, but do not believe it is getting water to the icemaker. There is water at the water dispensor in the door. I replaced the dual water valve thinking the soleinoid to the icemaker was bad, but that did not solve the problem. I am wondering if it could be the single water valve--the one where the water comes into the refrigerator? I see a tube coming out of it that appears to run directly to the water tube on the icemaker?