Andy suggests:

One more thing to try , in case some ice has formed
in the innards and jammed the thermostat, or something
similar....

Take all the food out and open the doors and unplug
the fridge . Leave it for a day so that EVERYTHING that
might possibly have ice on it can thaw.

It's a pain, but it might work... Just a last resort
to try...

Have a big meal with the meat. I will supply you with
an address to send the beer...

Andy