LG EBT64533403 / EAX67146203-1 Main Board

Location: 00i5

This replacement main board is designed for LG 55" LED TVs that use part number EBT64533403 (board model EAX67146203-1). It controls video processing, input handling, audio, system firmware, and overall TV operation — often needed when your TV powers on but displays no picture or has signal/audio issues.

Part & Board Numbers

• Part Number: EBT64533403
• Board / Printed Numbers (may appear on labeling):
  • EAX67146203-1
  • B U S Y L J R (serial/region code)

Important: Always match the part number and board identifiers on your original board. Matching by TV model alone may not guarantee correct compatibility.

Compatible TV Model

• LG 55UJ6540-UB (BUSYLJR region/serial variant)

Other LG models using the same board number may also be compatible — verify board number before ordering.

Common Failure Symptoms

• TV powers on but shows a blank or black screen
• No HDMI or input detection despite correct source and connection
• Freezing, reboot loops, or failure to boot fully
• No audio or distorted sound even with correct input and settings
• Random shutdowns or unexpected behavior after power on

Note: Issues may also stem from other components (power supply, panel, etc.) — proper diagnosis is recommended before ordering a replacement board.

Installation & Handling Notes

• Disconnect the TV from power and wait several minutes before servicing to allow internal capacitors to discharge.
• Use anti-static precautions when handling PCBs and internal components.
• Ensure all ribbon cables and connectors are properly aligned and fully seated.
• Avoid forcing any connectors or bending the board; handle with care to prevent damage.

Condition & Testing

• Professionally inspected and tested for proper function.
• Guaranteed working replacement board for the part numbers listed above.

Warranty & Returns

• Warranty: 180-Day Warranty.
• Returns accepted if the board is unmodified, undamaged, and properly installed.
• Please retain your original board until you verify successful repair.

Shipping

• Ships from Brighton, TN (your standard facility).
• Secure packaging to protect the board during transit.
• Expedited shipping available at checkout if selected.

If you are unsure whether this is the correct main board for your TV, please contact us — we’re happy to help verify compatibility before you order.