I called an appliance repair company and they told me and showed me all the scale build-up on my machine. I regularly clean and change the filter. They said even if they changed pumps there would be no guarantee it would work and recommended I put my money into a new machine. I found this website and ordered the pumps. I replaced the pumps and soaked my tubing in descaler which seemed to help but decided I needed to replace this tubing because where the water comes out onto the frozen plate still has scale inside, it isn't open-ended. Youtube videos and for less than $200 we have ice again!