Kenmore / Sears Microwave Control Board

This inverter converts the refrigerator's incoming power and controls compressor speed so the cooling system runs efficiently. Replacing a failed inverter restores proper compressor operation and helps return normal cooling performance. What it does

• Converts incoming AC power to the DC signals the variable-speed compressor needs
• Regulates compressor speed for temperature control and energy-efficient operation
• Works with the fridge's main control systems to manage compressor operation

• Disconnect power to the appliance before beginning any service to avoid shock
• Handle the board by its edges and avoid touching components; observe ESD precautions
• Mount and connect using original-style fasteners and harness connectors; verify secure, corrosion-free connections
• Check compressor, main control board, and harness for related issues if symptoms persist after replacement.

This main control board assembly manages the appliance's electronic controls and cycle selections so the unit runs as intended. Replace a failed board to restore communication between the user controls and mechanical components. What it does:

• Interprets user inputs and sends signals to motors, valves, and heaters
• Controls cycle timing, sensors, and automatic functions
• Commonly linked to symptoms like no power to controls, unresponsive or erratic operation, or cycles that won't start/complete
• Prevents incorrect signals that can cause inconsistent performance

• Disconnect power (unplug or shut off breaker) before starting any repair
• Handle the board by the edges and avoid static discharge; use anti-static precautions if available
• Note connector locations and take pictures before unplugging wires to ensure correct reassembly
• After installation, restore power and run a diagnostic or test cycle to ensure proper operation