Freezer works fridge does not on a GE GSS22QGMC BB

You need to take freezer evaperator cover off , then turn it to defrost and test the supply voltage across the defrost element. if no volts then test the round disk looking thing with 2 wirers comming out of it . with the supply power removed from the power point, the coil frozen up , disconnect these wirers and use a continuity checker such as a multy meter on diode check or buzzer mode, you should have a closed circuit through the defrost termination thermostat (round disk with 2 wirers) , it is in series with the defrost element thus cutting the power to the element if the coil temp gets too high and terminates the element , the timer will time out after it's time duration is reached. A good way to test the motor in the timer is to put a texta mark on the dial of the timer and check it in 1/2 hr, to see if it has moved.AFTER YOU HAVE PUT THE ELECTRICAL CONNECTIONS BACK AFTER TESTING THE TERMINATIN THERMOSTAT AND MADE IT SAFE, YOU WOULD PLUG IT BACK IN.
The defrost timer needs to be connected to power of the fridge to opperate.
regards
****. let me know your progress pls.