Its two years ago I also got the chance to use the frig as an ice chest. Not fun although it does hold the ice somewhat.
Although mine is a Norcold that was 13 years at that time. I did alot of looking at the options I had. I do not boondock always plugged in so need for propane was not neccessary.
I did not want to go the residential route as my carpentry skills were not goo enought plus it was hard to find a unit that would fit.
Getting a new norcold would require removing the front windshield
(thats what I was told) I most definitely did not want to do that.
So I looked at replacing the whole cooling unit. Save time and money all the way around. I ended up getting a totlly 120v cooling unit from JC Refrigeration
https://jc-refrigeration.com/
Very easy to replace new with old, great customer service all the good stuff. Can not be happier with the cooling capability of the unit. To me was a great choice.
If you do not fix your frig. I will not make for a happy trip. Mine boke down halfway into our month long trip. Many bags of ice.
Good Luck
Itasca Meridian SE 36g
Road Master Tow Dolly