GE Refrigerator not working right. Model# TFX25ZPBEWW 56th St/Lone Mountain CONCERN 1: Customer reports refrigerator section is not getting cold but freezer is still working properly. DIAGNOSTIC AND CAUSE 1: Found back panel and evaporator coils covered in frost. Tested the refrigerator defrost bi-metal thermostat for continuity, refrigerator defrost bi-metal continuity failed test. Refrigerator defrost bi-metal has electrical short. CORRECTION 1: Defrosted refrigerator evaporator coils and replaced defrost bi-metal thermostat. CONCERN 2: Customer reports refrigerator is not getting cold on refrigerator side. DIAGNOSTIC AND CAUSE 2: Inspected compressor operation, evaporator fan and condenser fan operation, all normal. Found frost build up on evaporator coils. Tested defrost heater for continuity, Found defrost heater and limiter shorted. CORRECTION 2: Replaced defrost heater and limiter. Tested operation, all normal upon completion.