refrigerator LMXS30776S/02. Started by replacing control board on top of left door. This did not help. Replaced the water valve in the back with no success. After spending a couple hundred in parts that did not resolve the problem, I called a technician and was provided a $700 quote to replace a control board and front dispenser piece.. After seeing the part number, it was the same control board I started with that did not remedy the problem. Any other suggestions?