Top drawer has no electrical power

The top drawer seems to have no power. It does not light up or beep. The bottom drawer is working. The Fisher Paykel customer service person advises me to call a repair person, it could be the controller. Is there anyway to test this theory before calling a repair shop? Could there be another part, other then the controller, that is the culprit? I want to fix it myself so any help on what might be wrong and how to fix it would be appreciated.

I f lock is activated during wash the draw will appear dead when wash cycle finishes ,check for lock symbol in lcd display if it is visible press lock button for about 5 seconds until you hear beep release button and try POWER button