Top Freezer works great.. Refridgerator stays warm.. Say Reason?

I just bought a second hand refridgerator with top mount freezer. Its only 3 years old. Anyways the freezer works great however the fridge portion does not get cold. Gets a little bit, but not like it is supposed to. Please help me asap. It has to be somethin simple.
Thanks in advance
Ken, October 2004


done
Need to know wether its one compressor or two and how many thermostats there are.

Chris_y, December 2004
try replacing the thermocouple, sounds most likely problem.

davey, November 2004