Norcold Power Board 639593/ 638189 (fits the N7/ NA7/ N8/ NA8/ N10/ NA10 models)
639593 is the Norcold part number. 638189 appears at the p/n stamped onto the board cover itself. This is the rear power board/ circuit board that works on the following Norcold models, regardless of serial number:
Norcold part #639593
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