Staff Answer
Oct 17, 2026 - 09:51 AM
Norcold has discontinued the 691443 power supply circuit board, and there's no direct factory replacement part number for it. It's the main power supply board for the Norcold N3150 and N3104 with serial numbers E059S–E365S and E001T–E089T. If your serial number is outside that range, your fridge uses a different board, so check the serial on the label inside the fresh food compartment first.
If your serial number is in range, these are your options:
- Repair your current board: many failures are a burned trace, relay or fuse. An electronics repair shop that services RV control boards can often fix it for less than a new board.
- Aftermarket board: Dinosaur Electronics makes replacement boards for many older Norcold models. Give them your board number and serial to check for a cross-reference.
- Replace the fridge: if the board can't be repaired, the cabinet may be worth replacing. Older units also get harder to keep running as other parts are discontinued.
The other N3150 parts we still carry are on our Norcold N3150 page, including the DC heating element 639192.
