Parts for Ge JT3800SH8SS: Control Panel Parts

The control board is the electronic brain of your appliance. It interprets keypad or knob inputs and sends power to internal components. Replacing a failed board can restore responsive controls, accurate timing, and reliable operation.

• Coordinates appliance functions and cycle logic based on user input and sensors
• Directs power through relays to run components such as motors, fans, and lights
• Interfaces with the display and user controls for status and settings
• Common symptoms: dead/blank display, unresponsive controls, won't start, intermittent shutdowns, or recurring error codes

• Disconnect power at the breaker or unplug before servicing
• Use ESD precautions; handle the board by the edges only
• Photograph wire positions and move connectors one at a time to the new board
• Some models require configuration after install—follow the unit's tech sheet or service manual

The Relay Board is an OEM part for GE microwave ovens. It contains the essential relay board and switches that direct power to the magnetron tube, turntable motor, and interior lighting. 

Causes of a faulty relay board can include moisture damage over time deteriorating electrical circuits or stress from temperature fluctuations weakening solder joints and connections.

Symptoms of a bad relay board include:

• Magnetron failing to heat food properly or sporadically overcooking  
• Turntable not spinning or unevenly rotating
• Interior lights not illuminating
• Microwave making buzzing/crackling noises during operation

This board is compatible with select GE, Hotpoint, and RCA models.

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 Power Board is an OEM part for GE microwaves. As the main circuit card, it facilitates transmission of high frequency energy to the magnetron tube responsible for efficient cooking.

Causes for replacement include failure of electronic pathways from continual usage, unexpected power surges, or moisture exposure damaging components over time.

Symptoms requiring replacement are:

• Diagnostic error codes displayed
• Power level options locked on high or unavailable
• Magnetron tube malfunctioning or non-functional
• Controls and display segments unresponsive

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

This VFD signal harness connects the appliance control board to the variable-frequency drive, carrying the signals that control motor speed. It restores reliable communication between control and drive so the motor responds correctly. What it does:

• Routes low-voltage control signals from the main control board to the VFD/drive
• Enables proper motor speed commands and feedback for normal operation
• Commonly replaced when intermittent motor response, drive errors, or communication faults occur
• Helps eliminate symptoms like failure-to-start, erratic motor speeds, or fault codes tied to drive communication

• One VFD signal harness

• Disconnect power before servicing to avoid shock or damage
• Inspect connectors and routing; replace if wires or terminals are damaged
• Secure harness away from heat sources and moving parts; match original routing for proper operation

A replacement board supporter that secures the appliance control board to the cabinet, helping keep the board stable and positioned away from wiring and chassis. Restores proper mounting to reduce vibration and movement of the control board. What it does:

• Holds and supports the control/PC board to prevent excessive movement or rattling
• Keeps the board spaced from the chassis and wiring to reduce risk of shorting or contact
• Helps maintain stable electrical connections for reliable control operation
• Reduces noise caused by a loose or vibrating control board
• Can prevent further wear on board mounting points and connectors

• Disconnect power to the appliance before beginning any service.
• Handle the control board by its edges and avoid touching components; use ESD precautions if available.
• Remove nearby panels or components as needed for access; retain all fasteners for reassembly.
• If mounting points or fasteners are damaged, inspect nearby parts and replace as required.

This electronic control board assembly manages oven functions and user controls so your range can respond to button presses and follow programmed bake/broil cycles. It replaces a failed or unresponsive controller to restore normal operation. What it does:

• Receives input from the user interface and controls oven heating elements and timers
• Manages display readouts, clock, and cooking cycle timing
• Commonly fixes symptoms like no display, unresponsive touch controls, or oven not heating
• Works with the oven's safety and sensor signals to regulate temperature

• One control board assembly as shown

• Disconnect power at the breaker before starting any repair
• Handle the board by the edges and avoid touching circuitry; use anti-static precautions if available
• Replacement may require removing the oven control panel and unplugging connectors — keep screw and connector locations noted for reassembly

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