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If the front dispenser panel doesn't illuminate at all, unplug the refrigerator and remove the the hinge cover on the freezer door hinge to expose the wire harness going into the freezer door. Unplug the plastic molex connector and check for any damage in the wire terminals. If you see damage, try to clean it with a toothbrush. If it all looks good, you either have a bad display board or a bad main control board, usually the main control board is the culprit on the back of the refrigerator so that is the part I would replace first. If you order the part from Repairclinic.com they allow returns should you need to return it and get the other board.
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