Stop chasing down an intermittent or dead Norcold fridge. The Dinosaur Electronics N991 is a direct-fit, USA-made replacement power supply circuit board engineered for Norcold 900, 9100, and early 1200 series absorption refrigerators. It restores full AC, DC, and LP gas operation and backs it all with a 3-year limited warranty -- longer coverage than most OEM boards.
Norcold 900 and 9100 series refrigerators are workhorses found in thousands of RVs, but their original power supply boards are known failure points. Symptoms include the fridge refusing to switch between power modes, failing to light on LP, or losing DC operation entirely. The N991 addresses all of those failure modes with a purpose-built replacement that matches the OEM connector layout and mounting footprint.
Dinosaur Electronics has been producing aftermarket RV refrigerator boards in the USA since the 1990s. The N991 is one of their most-installed boards, covering six Norcold OEM part numbers across two major refrigerator families. It is a direct plug-and-play replacement -- no rewiring, no adapters required for supported models.
Supports full 2-way (AC/DC) and 3-way (AC/DC/LP gas) absorption refrigerator operation. Handles automatic or manual mode switching.
Direct replacement for Norcold 618198, 618224, 618574, 618575, 618828, and 619378 -- covering multiple production runs of the 900/9100 and early 1200 series.
Designed and manufactured domestically by Dinosaur Electronics. Components are selected for RV duty -- vibration, heat cycling, and extended storage periods.
Backed by Dinosaur Electronics' 3-year limited warranty -- significantly longer than typical OEM replacement boards, which often carry only a 1-year coverage period.
The N991 is the correct board when your Norcold unit carries one of the following OEM part numbers printed on the existing board or listed in your refrigerator's service manual:
If your board number is not on this list, verify your refrigerator model number against Norcold's service documentation or contact Dinosaur Electronics directly before ordering. Installing an incorrect control board can damage the refrigerator's heating element circuit.