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So unfortunately the problem is with your main control board under the refrigerator. When you open the door it's causing a power draw in the board and the board is cutting power to the other parts including the lights which is why them dim. It's a common problem with this model, and the part number is ***** Now the downside is that the part is no longer available and it's quite expensive. You can probably find a refurbished board on-line but they are usually very expensive at about $300+. The other option is to pull the refrigerator forward, remove the lower back access panel, and remove the control board inside the metal box in the far back right corner. Send the board into a place like Core Centric Solutions and they will refurbish the part but it usually takes about 1-2 weeks. I'm very sorry about the bad news with this refrigerator.
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