Ice maker does not fill. New water filter. Replaced ice maker and inlet valve in door and still not working. I have heard to check if lines at ice maker are frozen but don't know how to get to lines in the upper part of the door. All I can see is the spout behind the ice maker. Also was wondering if the control board in the door or another board might be bad. My wife says she thinks it started after we had several power outages within a short time so maybe a board was damaged? Any guidance would be appreciated!