side by side refrigerator/ freezer

The freezer and refrigerator stop cooling. If you turn the control knob a little or turn the unit off it will start cooling for a while but after few hours stops again. What do you think is the problem?

Most likely the problem is a bad thermostat (#9 on the [B]diagram[/B]).

Here are the breakdown diagrams and http://www.appliancepartspros.com/partsearch/model.aspx?model_id=248040

Gene.