You will first want to ensure the RV is level.
If the RV is level, then open the rear access vent door on the side of the RV to access the rear of the refrigerator. Feel the coils just above the tank on the cooling system. These coils should be warm to the touch. If they are warm and the refrigerator is not cooling then you will require a replacement cooling unit. Also, the most common area for the Dometic 2652 to leak is just above the propane burner area. If it has leaked, you should see a yellow residue in that area. The cooling unit can be changed in approximately 2-3 hours with no specialized tools needed (Arcticold offers 7 day a week free tech support). The old cooling unit will simply unbolt and the new one bolts in. Check out ArctiCold Refrigeration We keep it cold
(the highest quality product available) Arcticold New Cooling units come standard with a Lifetime Warranty. Install instructions are also provided with the cooling unit. Arcticold has locations across North America to provide fast delivery. Arcticold cooling units may be purchased over the phone (1-888-782-6665) or through Ebay- Dometic RM2652 Brand New Manufactured Cooling Units LIFETIME WARRANTY
#1 Help Diagnose Video
#2 Install a Arcticold RM2652 Cooling Unit Video