Parts for Lg LRE30453ST/01: Controller Parts

The PCB Assembly is an OEM replacement part for LG ranges. This component serves as the brain of the appliance, hosting and connecting various electronic components. It is instrumental in managing and coordinating the functions of the range, ensuring it operates efficiently and effectively.

Symptoms of a bad PCB Assembly include:

• The oven or burners not heating up or maintaining the set temperature
• The display panel malfunctioning or showing error codes
• The range's features, like timers or sensors, not working correctly
• Unusual noises or behaviors during the operation

Causes for a malfunctioning PCB Assembly can be varied, including electrical surges, wear and tear over time, or issues with the internal components and connections on the board.

This OEM LG part is also compatible with Sears/Kenmore ranges.

This power control board assembly regulates power to the appliance's control and motor circuits so the unit runs reliably and responds to user inputs. Replaces a failed sub power board to restore normal electrical control. What it does:

• Routes and distributes power to control circuits and related components
• Works with the main control to manage motor, heater, and user-interface functions
• Can cause no-power, intermittent operation, or control/display errors when faulty
• Helps stop erratic starts, unexpected shutdowns, or failure to respond to controls

• One power control board assembly (as shown)

• Always disconnect the appliance from power before starting service
• Handle the board by its edges and avoid static discharge; use ESD protection if available
• Verify connector orientation and seating; replace only if this exact assembly is required
• If symptoms persist after replacement, test related components and wiring harnesses

Power transformer that supplies low-voltage power to the appliance control board and user interface, helping restore stable voltage to control circuits for reliable operation of displays and control functions. What it does:

• Steps down incoming mains voltage to the low-voltage level required by the control board and display.
• Replaces a failed transformer that can cause blank or dim displays and unresponsive controls.
• Can address intermittent resets, failure to start, or control-board power-loss symptoms when diagnosed as the faulty component.
• Works with the main control assembly to maintain stable voltage for sensors and interface electronics.

• Disconnect power at the breaker or unplug the appliance before starting any work.
• Handle the control board and connectors carefully; document or photograph wiring locations before removal.
• Reconnect all terminals securely; verify correct orientation and insulation to avoid shorts.

The Membrane Switch Assembly is the touch keypad for your appliance's control panel. It relays button presses to the electronic control, restoring reliable input when keys stop responding or a "stuck key" error prevents selecting functions.

• Provides the printed keypad used to choose settings and start/stop
• Sends each key press through its flat ribbon lead to the control board
• Common fix for unresponsive or intermittent buttons
• Can resolve "stuck key"/keypad error beeps or messages
• Useful when the display lights but buttons do not respond

• Disconnect power to the appliance before servicing.
• Access the control panel; note screw and clip locations for reassembly.
• Handle the ribbon connector carefully—do not crease it and seat it fully.
• If servicing a microwave, internal high-voltage components can retain a charge even unplugged.

A circular lug designed to join a stripped wire to a threaded terminal for a secure electrical connection. Helps restore reliable contact at terminals and reduces the chance of intermittent power or arcing at connection points. What it does:

• Provides a strong mechanical and electrical connection between a wire and a screw or bolt terminal.
• Helps prevent loose connections that can cause intermittent operation, sparking, or overheating.
• Commonly used where a ring-style termination is required for safe, stable wiring.
• Works with properly sized wire and fasteners to maintain consistent conductivity.

• Always disconnect power to the appliance before inspecting or replacing electrical parts.
• Use the correct lug size and gauge for the wire and terminal; crimp or solder per manufacturer recommendations.
• Tighten terminal hardware to the appliance manufacturer's specified torque; avoid over-tightening which can damage the lug or terminal.
• If wiring insulation or the terminal is damaged or corroded, replace the affected components rather than reusing them.