The Dometic replacement for the RM24 is RM2193. Don't know if you had that information or not. Found it here on the Dometic site: Refrigerators Available for Replacement.
About if you should spend the time/effort reconditioning an older model... I'll leave that answer to the experts
Here's an update - It seems there is no easy answer when it comes to picking a replacement unit. My Trillium
was built around the RM24-sized fridge
, or so it seems. Newer models like the RM2193 would either stick out quite a bit or require constructive surgery around it, and have no freezer. There is an European Dometic model that matches the RM24 size (RM4210) but is an "overseas unit only" as I was told by Dometic client support. Other slightly more recent, but retired Dometic models also had the same size as mine (RM190, RM2200,2201,2202) but I couldn't find any in any present or past classifieds.
I actually disassembled my RM24 all the way down to the cooling unit, thanks to the service manual. There are no signs of leaks
, metal seems sound, and it is possible to get it recharged, but there is no way to tell if there is significant blockage inside. I am told, however, that those older coils were made much stronger than the ones they make today. I did glance at the new 12V compressor models, but I am concerned about their boondocking