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Waeco Adler/Barbour Refrigeration Problem - Fridge 101
c34.org
Basically - fuse/power, fan running?, bypass t'stat, check controller - get LED connected to diagnose, verify compressor windings- see youtube
I bought new compressor on Amazon and new dual voltage controller (12vdc/120vac). My unit had refer couplings just adjacent to the compressor so taking the unit out to replace the compressor was an easy fix. This allowed me to get the tubing silver soldered correctly. I did have access to a vacuum pump so I was able to recharge with R134A.
Good luck