Why do control knobs break?

Control knobs can break due to repeated use, exposure to high heat from the burners, or accidental impact. Over time, the plastic material can become brittle, leading to cracks, breakage, or a loose fit on the control shaft. This wear is common for frequently used appliance components.

Can I use a universal knob for my LG oven?

While some universal knobs exist, it is generally recommended to use a manufacturer-specific replacement part for LG ovens. Universal knobs may not fit correctly, align properly with the control panel, or match the aesthetic of your appliance. A genuine part ensures proper function and appearance.

How do I know if the problem is the knob or the valve/switch?

If the knob is physically damaged, cracked, or simply won't stay on the shaft, the knob itself is likely the issue. If the knob is intact and turns correctly but the burner's flame or heat does not respond, the problem might be with the gas valve, infinite switch, or other internal components, requiring further diagnosis.

LG Oven Surface Burner Knob Repair & Replacement

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🏆 RECOMMENDED PART

UPTTHOW AEZ73293801 Stove Knob Gas Oven Range Control Knob Assembly (5PCS)

Worth Buying: Surface burner knob AEZ73293801 lets you control the heat of the surface burner on the range. The same quality as OEM, when your knob is broken, you can buy accessories to replace it yourself, saving you...
Compatible Models: Replaces AEZ73293801, AP5594929, 2025031, AH3639420, EA3639420, EBZ60710601, PS3639420. Applicable to the following models, not all: LCG3011ST, LCG3091ST, LCG3611ST, LCG3691ST, etc
High Quality: Made of highly durable materials, rigorously tested to meet the OEM standard. Compact and sturdy, heat resistant and wear resistant. The surface is glossy
Easy To Install: Simple and convenient installation, saving your time and money. Remove the old knob from the stove. Align the new knob holes and push them directly onto the shaft until they stop rotating
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What the AEZ73293801 does

This knob allows the user to select and adjust the heat level for a surface burner on an oven or range, typically by rotating a valve stem or infinite switch.

Symptoms when this part fails

Knob is cracked, broken, or discolored
Knob is loose or falls off the shaft
Knob won't turn or is difficult to rotate
Knob turns but does not adjust the flame or heat setting

Compatibility

Fits the LG family. Specifically:

Any unit originally equipped with OEM part number(s): AP5594929, 2025031, AH3639420, EA3639420, EBZ60710601, PS3639420.
Check the model/rating plate inside your appliance and compare it against the fitment table on the product listing before ordering — this guide does not list specific compatible models because Amazon does not provide verified fitment data through this pipeline.

Also replaces: AP5594929, 2025031, AH3639420, EA3639420, EBZ60710601, PS3639420

Tools you'll need

New replacement knob
Small flathead screwdriver (if set screw is present)
Pliers (optional, for stubborn knobs)

Difficulty: Easy · Time: 5-10 minutes

How to install the AEZ73293801, step by step

Disconnect power to the oven or turn off the gas supply at the main valve.
Grasp the old knob firmly and pull it straight off the control shaft.
If a set screw is present, loosen it with a small screwdriver before pulling the knob.
Clean any grease or debris from the control shaft.
Align the new knob with the control shaft, ensuring proper orientation.
Push the new knob firmly onto the control shaft until it seats securely.
If applicable, tighten any set screw on the new knob.
Restore power or turn on the gas supply and test the new knob's function.

Related troubleshooting

If swapping this part doesn't fix the issue, check these next: