Kitchenaid KRFC704FPS00 Refrigerator

Thank you for reaching out. Yes, the board can have an effect on the unit. Other than the refrigerator not cooling, what other symptoms are you getting? Are you showing any codes on the display? Below I have provided a guide that can help narrow it down to the board. If you end up with the same result then, I recommend sending it in. 
 
                                                    FRIDGE NOT COOLING
==Condenser Coils are Dirty
The condenser coils are usually located under the refrigerator. They dissipate heat as refrigerant passes through them. If the condenser coils are dirty, they won’t dissipate the heat effectively. The refrigerator will not be able to maintain the proper temperature.
 
==Condenser Fan Motor
The condenser fan motor draws air through the condenser coils and over the compressor. If the condenser fan motor is not working properly. First, check the fan blade for obstructions. Next, try turning the fan motor blade by hand. If the blade does not spin freely, replace the condenser fan motor. If the fan blade spins freely, use a multimeter to test the fan motor for continuity. If the fan motor does not have continuity, replace it.
 
== Evaporator Fan Motor
The evaporator fan motor draws air over the evaporator (cooling) coils and circulates it throughout the refrigerator and freezer compartments. Some refrigerators have more than one evaporator fan motor. If the evaporator fan is not working, it will not circulate the cold air to the refrigerator compartment. If this occurs, the freezer may still get cold, while the refrigerator won't get cold. To determine if the evaporator fan motor is defective, try turning the fan blade by hand. If the fan blade does not turn freely, replace the fan motor. If the motor is at times noisy, replace it. Finally, if the motor does not run at all, test the motor windings for continuity. If the windings do not have continuity, replace the evaporator fan motor.
 
==  Thermistor\ sensor
The thermistor monitors the refrigerator temperature and sends the temperature reading to the control board. If the thermistor is defective, the compressor and evaporator fan may not run when necessary and your unit won't get cool enough.  If the resistance does not change, or the thermistor\snesor does not have continuity, replace the thermistor\ sensor.
 
==Compressor
If the compressor is not working, the refrigerator won’t cool.  If you have determined that all of the other components are working properly, check the compressor.  If there is an open circuit, the compressor is likely defective. If you have determined that the compressor is defective, it must be replaced.
 
== Door Gasket
If the Refrigerator runs constantly the door gasket may be torn or defective, or if the door is not shutting properly warm air can enter the refrigerator and cause the evaporator coils to ice over. If the door gasket is defective the evaporator coils ice over too quickly and the defrost cycle cannot keep up.