Jes 9900Bas Parts

The Microwave Door Switch is an OEM part for GE microwaves, designed to prevent the microwave from operating when the door is open by interrupting the power whenever the door is not securely closed. The door switch is an essential safety feature.

Symptoms of a failing Microwave Door Switch include:

• The microwave not starting or heating
• Running when the door is opened
• Unusual noises when the door is closed  

Causes of a bad Microwave Door Switch can result from repeated opening and closing of the door or slamming that can cause the switch to degrade or become misaligned, leading to intermittent or failure.

This OEM GE part can also be used on Hotpoint, RCA, and Kenmore/Sears appliances. 

The Door Interlock Switch is an OEM part for GE microwaves. It ensures the safety of the microwave by preventing the appliance from operating while the door is open. This switch is part of a microwave's safety mechanism, which includes multiple interlock systems designed to stop the generation of microwaves immediately once the door is opened, thereby protecting users from exposure to microwave radiation.

Signs that it's time to replace your door interlock switch include the microwave not starting or stopping unexpectedly, the microwave continuing to operate with the door open, or a failure to heat food even though the appliance seems to be running. 

Symptoms of a bad Door Interlock Switch include:

• Microwave does not start
• Microwave stops unexpectedly
• The microwave operates with the door open
• Microwave turns on but does not heat food

This OEM GE part can also be used on Hotpoint, RCA, and Kenmore/Sears appliances. 

The Monitor Switch is an OEM replacement part for GE microwave ovens. Located internally on the turntable control circuit board, this switch monitors rotation of the turntable during cooking cycles.  

Causes of failure involve degradation of the electrical contacts from continuous arcing loads over years of use combined with vibration stresses.

Symptoms of a faulty monitor switch include:

• The turntable no longer rotates or spinning intermittently
• Cooking cycles aborting prematurely with error messages 
• Screeching or grinding noises emanating from beneath cavity
• Visible burnt spots on turntable drive assembly

This genuine GE switch is also compatible with select Hotpoint and RCA models.

The Fuse is an OEM part for GE microwaves. It serves as a safety device designed to protect the microwave from excessive current that can cause overheating and potential fire hazards. When the current flowing through the microwave circuit exceeds a certain level, the fuse blows or breaks, cutting off the power to prevent damage or fire.

Common causes for a fuse to blow include power surges, faulty wiring within the appliance, or the use of microwave inappropriate containers that cause sparks. It is essential to address these issues not only to replace the fuse but also to correct the underlying problems to prevent future failures.

Symptoms of a bad fuse include:

• The microwave suddenly stops working.
• No signs of power or response even when the microwave door is closed and the start button is pressed.

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

The Switch Monitor Interlock is an OEM replacement part for GE microwaves. This safety component ensures that the microwave operates only when the door is securely closed. It prevents the microwave from running if the door is open, providing a critical safety feature to protect users from exposure to microwave radiation.

Causes of a bad switch monitor interlock can include wear and tear over time, mechanical damage from frequent door opening and closing, or electrical malfunctions that impact its performance.

Symptoms of a bad Switch Monitor Interlock include:

• The microwave not starting or operating intermittently
• The microwave running with the door open
• Error messages or safety warnings displayed on the control panel
• Unusual clicking or buzzing noises when the microwave door is opened or closed

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

The Magnetron is an OEM component specifically designed for GE microwaves. The magnetron is responsible for generating microwave radiation that cooks food by utilizing electromagnetic energy. It works by accelerating electrons within a vacuum tube using a magnet to generate microwave emissions. 

Causes of a bad magnetron can include overuse, excessive cooking times, damage from arcing due to sparks, or general wear and tear over time. 

Symptoms of a bad magnetron include:

• Inefficient or inconsistent cooking and heating 
• Longer cook times required 
• Food not cooking thoroughly or remaining cold in spots
• The microwave making buzzing or humming noises during use

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

The Cooking Tray is an OEM replacement part for GE microwaves, designed to support and rotate food for even cooking. This glass tray fits within GE microwave models, allowing for the optimal distribution of microwave energy throughout the food. By rotating, it ensures that meals are evenly heated, preventing cold spots and promoting a uniform cooking process. Microwave Glass Turntable Tray, 12 1/2" Dia. Might Be Smaller Than Original.

Causes of a bad Microwave Cooking Tray can include cracking, chipping, or breaking due to accidental drops or heavy impact. Over time, repeated use can also wear down the tray, potentially compromising its structural integrity.

Symptoms of a bad Microwave Cooking Tray include:

• Inability to rotate, affecting the microwave's ability to cook food evenly.
• Unstable movement or wobbling during operation.
• Cracks or breaks in the tray, which can lead to unsafe conditions or further damage to the microwave.

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

This latch board is the molded bracket that holds and aligns the door interlock switches and latch levers behind the front panel. Replacing a cracked or warped board restores proper door engagement so the appliance can start and operate safely.

• Supports and positions the door interlock switches and latch levers for correct operation
• Ensures the safety interlock sequence completes when the door closes
• Typical symptoms of failure: won't start, door-related error, or stops when the door is jostled
• Visible cracks or distortion around switch mounts or latch slots

• Disconnect power at the breaker before servicing; follow manufacturer safety procedures
• Access typically requires removing the grille and/or control panel to reach the latch area
• Transfer existing door switches and mounting hardware to the new board, matching orientation
• After reassembly, verify smooth door closure and proper switch actuation

This high-voltage rectifier diode is used in the microwave's high-voltage circuit. It converts AC to DC so the magnetron can produce heat. A failed diode can cause no heat, loud humming, or a blown fuse when starting. What it does:

• Rectifies high-voltage AC to DC to power the magnetron
• Blocks reverse voltage in the HV circuit
• Common failure symptoms can include: runs but doesn't heat; loud hum then shutdown; line fuse blows at startup

• 1 high-voltage diode

• Unplug the microwave and properly discharge the high-voltage capacitor before servicing—dangerous voltage can remain even when unplugged
• Match diode orientation/polarity to the original and ensure a solid chassis ground connection where used
• Route leads and reinstall any clamps/insulators exactly as found; keep wiring clear of sharp edges and hot components
• If the original diode failed, inspect the HV capacitor and transformer for related issues before reassembly

This magnetron assembly generates the microwave energy that heats food. Replace a weak or failed unit to restore proper cooking performance and resolve no-heat complaints when the microwave appears to run but no longer warms items. What it does:

• Converts high-voltage power into microwave energy to heat food inside the oven cavity
• Failure can cause: microwave runs but won't heat or takes much longer to heat
• Often accompanied by a loud humming/buzzing during cook
• May trip the internal fuse/breaker or shut off shortly after start
• Visible damage to the magnetron antenna cap or signs of arcing near the waveguide can point to failure

• 1 magnetron assembly

• Unplug the microwave and safely discharge the high-voltage capacitor before servicing
• Remove the outer cover to access the magnetron; note wire locations and orientation
• Transfer any required mounting hardware/shields from the old part; avoid touching or damaging the ceramic insulators or antenna cap
• Reassemble completely and test heating with a cup of water—never operate the unit empty

• No-heat issues can also be caused by a failed high-voltage diode, capacitor, transformer, or door switches; diagnose where safe before replacing

This microwave high-voltage capacitor stores and releases energy in the high-voltage circuit to power the magnetron. Replacing a failed capacitor helps restore proper heating and protects other components in the high-voltage system.

• Works with the transformer and high-voltage diode to supply the magnetron with the required voltage
• Failure may result in the unit running but not heating
• Shorted capacitors can blow the internal fuse or trip a breaker; opens may cause loud humming or buzzing
• Visible swelling or leakage on the capacitor body are common failure signs

• Unplug the microwave; capacitors can retain a dangerous charge even when unplugged—discharge using an appropriate, insulated method before servicing
• Note wire positions and terminal orientation; transfer any mounting hardware from the original part
• Mount securely and route wires to avoid pinching

This replacement microwave lamp restores proper lighting inside the cavity or over the cooktop. A working bulb improves visibility while cooking and checking doneness, and allows the light feature to operate as intended.

• Provides illumination when the door opens or when the light button is used
• Helps you see food during cooking and cleanup
• Typical failure symptoms: no light, flickering, or intermittent lighting
• Visible darkening or a broken filament indicates the bulb has failed

• Disconnect power at the breaker or unplug the appliance before replacing
• Allow the bulb and surrounding area to cool
• Match the base style and electrical rating to your original bulb per the owner's manual
• If your bulb is the halogen capsule style, handle with clean gloves or a cloth; avoid touching the glass

This molded resin cover is a protective plastic shield used inside the microwave. It helps protect internal components and ducting from splatter and debris and restores a secure, finished fit when the original cover is cracked or missing. What it does:

• Shields internal components from grease, steam, and food splatter inside the unit
• Helps maintain proper airflow paths and a snug, rattle-free fit
• Common replacement when the original cover is cracked, warped, loose, or missing
• Visual cue: exposed internal parts or a cover that won't stay secured

• One resin (plastic) cover

• Disconnect power (unplug or switch off the breaker) and allow the unit to cool
• Access the cover location; remove retaining screws/clips and keep hardware for reuse
• Align the new cover and secure it without overtightening
• Ensure the cover is fully seated and not contacting nearby moving parts before restoring power

This turntable motor rotates the microwave's glass tray during cooking. Replacing a worn or seized motor restores smooth, consistent tray movement to help ensure even heating and reliable performance.

• Drives the turntable shaft/coupler to rotate the glass tray during cook cycles
• Helps promote more even cooking and defrosting
• Common symptoms of failure: tray doesn't turn, intermittent or jerky rotation, loud humming/grinding from beneath the cavity

• Disconnect power before servicing; microwaves contain high-voltage components—use caution
• Access is typically from the bottom of the unit; remove the tray and coupler, then the motor's mounting screws, and transfer the wire connections
• Align the motor shaft with the coupler and ensure the tray spins freely before reassembly
• Test with a microwave-safe cup of water to ensure smooth rotation

Guide roller assembly that restores smooth, stable movement for a sliding rack or appliance drawer. Replaces worn or broken rollers to reduce sticking, grinding, or misalignment during use. What it does:

• Guides a sliding rack/drawer so it opens and closes evenly without binding
• Helps stop noisy or jerky movement caused by damaged or worn rollers
• Restores proper alignment to prevent racks from slipping or dropping
• Used where a roller rides along a track or guide to support smooth travel

• Disconnect power (and gas, if applicable) and remove any loose items from the appliance before beginning.
• Remove the affected rack/drawer or access panel to reach the guide; keep mounting hardware for reuse unless damaged.
• Align the guide and reinstall hardware securely; test the rack/drawer movement before completing reassembly.
• If mounting clips or brackets are broken, replace those parts as needed for a secure fit.

Ceramic