Ls19901a0 Parts

This power control board assembly replaces the main electronic control that directs power and timing functions, restoring reliable operation and control of your appliance's electrical systems. What it does:

• Regulates power to motors, valves and heaters based on appliance commands
• Interfaces with user controls and sensors to execute cycles
• Can cause no-power conditions, unresponsive controls, or error codes when faulty
• Helps stop intermittent starts, unexpected shutdowns, or control panel failures

• Disconnect power to the appliance before starting any work
• Handle the board carefully to avoid ESD damage; do not touch exposed components
• Verify all wire connectors are fully seated and routed as original during reassembly

This cross-flow fan assembly moves air across the evaporator to help maintain even cooling in the fresh food compartment. Replacing a worn or damaged fan restores proper airflow and reduces temperature variation. What it does:

• Circulates air across the evaporator to support even cooling and temperature balance
• Helps prevent warm spots and keeps stored food at intended temperatures
• Stops abnormal noises or vibration caused by a broken or imbalanced fan
• Supports defrost airflow after a defrost cycle for consistent performance

• One cross-flow fan assembly

• Disconnect power to the appliance before starting any repair.
• Remove the appropriate rear or evaporator cover to access the fan; handle blades carefully to avoid damage.
• Reconnect the electrical connector securely and ensure the fan housing and mounting tabs are properly aligned.
• Test operation after installation; if unusual noise or continued cooling issues persist, verify related components per OEM instructions.

This thermistor assembly is the refrigerator/freezer temperature sensor that monitors internal air temperature so the control board can maintain proper cooling. Replaces a faulty sensor to help restore accurate temperature regulation. What it does:

• Senses cabinet temperature and sends a variable resistance signal to the control board
• Allows the control system to adjust compressor and damper operation for consistent cooling
• Commonly linked to erratic temperatures, freezer icing, or fridge not cooling properly
• Used wherever the control requires a thermistor input for temperature feedback

• One thermistor assembly

• Disconnect power before starting any repair to avoid electric shock
• Handle the sensor and wiring gently; avoid crushing or kinking the thermistor lead
• Route and secure the harness as removed to prevent interference with moving parts

This replacement electric capacitor helps stabilize voltage for appliance motors and control circuits, restoring reliable starts and smoother operation. Use it to replace a worn or failed capacitor to address motor-related performance issues. What it does:

• Stores and releases electrical charge to help motors start and run smoothly
• Stabilizes voltage to reduce surges that can affect control circuits
• Common symptom: motor hums but won't start or runs weakly
• Common symptom: intermittent operation or frequent tripping of breakers/fuses
• Can fail over time from heat, age, or repeated starts

• Always disconnect power to the appliance before servicing
• Discharge capacitor terminals before touching to avoid shock
• Observe terminal orientation and wiring; replace with identical type/ratings

This is the main power/control printed circuit board that manages a unit's electronic controls and power distribution, restoring normal operation when the original board fails. It replaces a faulty control module to help the appliance respond correctly to inputs. What it does:

• Controls power and electronic functions across the appliance's control system
• Can cause blank or unresponsive displays, error codes, or intermittent operation
• Regulates signals between buttons, sensors and major components

• One main PCB power/control board assembly

• Disconnect all power before beginning service to avoid shock or damage
• Handle the board by its edges and avoid static discharge; use an anti-static strap if available
• Note or label connector locations before removal to ensure correct reconnection
• Replace mounting hardware and covers, then verify operation through full power-up and basic function tests

This box-style film capacitor is a replacement electrical filter used on select LG appliance control and motor circuits to suppress interference and stabilize operation. It helps restore proper electrical performance when a film capacitor has failed. What it does:

• Provides noise suppression and transient protection in control and motor circuits
• Helps stabilize voltage supplied to sensitive components
• Commonly replaced when you see intermittent operation, control board errors, or unusual electrical noise
• Prevents further stress to downstream electronics caused by a degraded capacitor

• Disconnect power to the appliance before inspecting or replacing the capacitor
• Handle with care; discharge the capacitor per manufacturer instructions before touching terminals
• Verify polarity and terminal locations match the original part before installation

This main PCB power control board assembly replaces the appliance's primary electronic control module to manage power and core control functions, helping restore normal operation when the original control board fails. What it does:

• Controls power distribution and coordinates electronic functions across the appliance
• Processes user inputs and runs core cycles or modes
• Can stop faulty operation that causes no power, no display, or unresponsive controls
• Resolve intermittent operation, unexpected shutdowns, or error-code symptoms tied to a bad control board

• One main PCB power control board assembly

• Disconnect the appliance from power before starting any repair
• Handle the board by its edges and avoid touching components; use ESD precautions
• Verify connectors and harnesses match and seat fully before restoring power