Parts for Ge PSA9120SP1SS: Control Parts

The Encoder Board is an OEM replacement part for GE microwaves, engineered to provide control over the microwave's functions. This component translates user input into digital signals for the microwave's main control board. It allows users to adjust power levels, cooking times, and settings accurately. 

The causes for issues with the Encoder Board can be attributed to electrical faults, such as short circuits or component failures, often resulting from power surges or normal wear and tear. 

Symptoms of a malfunctioning Encoder Board include:

• Difficulty in adjusting settings, which may manifest as unresponsive or erratic control panel behavior.
• The microwave starting or stopping unexpectedly, indicating a miscommunication between the user interface and the microwave's control system.
• Inconsistent cooking results, stemming from the inability to accurately set cooking parameters.

This OEM GE part is also compatible with Hotpoint, RCA, and some Kenmore models.

The Relay board is an OEM component specifically designed for GE microwaves. This board features electronic relays that control important functions such as power levels, timing, and safety features. 

Symptoms of a bad relay board include:

• Microwave not heating or heating unevenly 
• Buttons or controls not working properly
• Timer not counting down accurately
• Safety features such as door interlock failing
• Buzzing, clicking, or popping noises coming from inside

Causes of a bad relay board include component failure over time due to heat cycling, electrical surges or spikes, or physical damage from accidental drops or impacts. 

This OEM GE part is also compatible with Hotpoint, RCA and some Kenmore models. 

This replacement control knob restores a secure, accurate feel when selecting settings on your appliance. Swap in a new knob to fix cracked, stripped, or missing originals so you can turn the control reliably and keep daily cooking on track.

• Engages the control shaft so you can select heat or function as intended
• Common symptoms: knob spins freely, falls off, feels wobbly, or won't turn the control
• Restores proper indexing with panel markings for predictable operation
• Freshens the look of a worn or damaged control area

• Disconnect power before servicing; for gas appliances, also shut off the gas supply
• Pull the old knob straight off the shaft—avoid prying against the control panel
• Align the new knob with the flat/key on the shaft and press firmly until fully seated
• Verify smooth rotation and correct pointer alignment after installation

Electronic main control board that manages core refrigerator functions and the user interface. Installing this replacement restores control of compressor, fans and diagnostics when a failed board causes power, cooling, or display issues. What it does:

• Regulates compressor and fan operation — symptoms: refrigerator not cooling, runs continuously, or cycles erratically.
• Manages user controls and display signals — symptoms: unresponsive buttons, blank or erratic display, or control panel errors.
• Controls defrost timing and related outputs — symptoms: frost buildup, excessive ice, or inconsistent temperatures.
• Communicates with sensors and other modules to coordinate normal operation — symptoms: intermittent operation or fault codes.

• Always disconnect power to the appliance before servicing to avoid shock or damage.
• Handle the board by the edges and avoid static discharge; use a grounded wrist strap if available.
• The part number on the original board matches WB27X35345 before installing.