Parts for Lg LMV2031ST/00: Controller Parts

This customized screw fastens specific panels, brackets, or internal components in LG appliances. Replacing a missing or stripped fastener restores a secure fit and helps reduce vibration, rattling, and premature wear. What it does:

• Secures mating parts such as panels, brackets, or mounts per the appliance design
• Restores proper fit when the original screw is lost, damaged, or stripped
• Helps reduce vibration and rattling from loose components
• Maintains alignment to support correct operation of the assembly

• Includes: One screw

• Disconnect power and, if applicable, shut off water and gas supplies before servicing
• Match length and thread to the original; start by hand to avoid cross-threading
• Use the correct driver size and tighten snugly without over-torquing
• Inspect and replace any damaged clips, inserts, or mating threads before reassembly

The Power Supply Board is an OEM part for LG microwaves. It serves as the primary voltage regulator, distributing safe electrical current to other internal boards and lighting/fan components.

Symptoms of a faulty power supply board include: 

• Intermittent or inconsistent heating performance
• Lights or displays flickering or not illuminating as intended
• Fan or internal cooling functions not activating
• Safety features or error codes prompting replacement

Causes can be damage from power surges over time compressing sensitive electronics. Moisture impacting internal circuits is also possible.

This LG replacement is compatible with some Kenmore models as well.

The Controller Assembly, Sub is an OEM replacement part for LG microwaves. It works behind the scenes to precisely coordinate all cooking operations through integrated circuits and firmware. Located internally, the sub controller receives instructions from the main control panel and regulates power levels, time settings and safety features.

Symptoms of a bad sub controller assembly include:

• Erratic or inaccurate power levels during cooking  
• Faulty or unresponsive display readings
• Inability to set or change time functions
• Intermittent or premature shut offs 

Causes of failure can stem from damage due to power surges over the lifespan. Repeated heating cycles also take a toll on electronic pathways. 

This OEM LG part is compatible with select Kenmore microwaves as well.