After searching refrigerator videos of related problems I found AppliancePartsPros.com and inquired about replacing the Dispenser Assembly board on the front door. During the several-month malfunction period, the freezer and refrigerator were working before they finally stopped. That lead to a discussion with an APP customer rep who asked me to describe the problem and then reviewed their log of prior customer reviews & Fixit comments with me. We uncovered a description of identical issues in several comments which allowed me to change my diagnosis and check the Main Control Assembly circuit board at the rear base of the refrigerator which was the real problem. I ordered the rear board, not the dispenser board, and replaced it in about 25 minutes, a simple operation. ONE TELLTALE SIGN that the rear circuit board was bad was seeing 2 small 470 of SWOLLEN CAPACITORS with rounded tops something I'd viewed in an online video of someone with a similar problem. So, if you notice any swollen capacitors on either circuit board it's likely the, or part of the, problem. In this case, they were the same 2 that were swollen on my rear board. A very manageable self-diagnosis with some APP guidance and problem-solving. After 4 days dispenser, refrigerator and freezer all were working well. Paid $11 for expedited delivery and got part in 2 days. Very happy with the results so far. Will certainly use APP for my appliance malfunction issues going forward. Suggestion, vacuum the dust from the rear before completing the replacement. Always a good maintenance practice while you're servicing. A satisfying self-fix with minimal downtime without a critical daily-use appliance like a refrigerator. Thanks.