Samsung BN44-00979A (BN4400979A) LED Driver Board - QN75Q80RAFXZA QN82Q70RAFXZA

The Samsung BN44-00979A (BN4400979A) is an OEM LED Driver Board compatible with Samsung QLED TVs including the QN75Q80RAFXZA and QN82Q70RAFXZA. This board resolves common LED backlighting failures, dimming issues, and no-picture symptoms. Board number L75S8NC_RDY. Replaces part numbers BN44-00979A and BN4400979A.

Specifications & Board Identifiers

• Part Number: BN44-00979A (BN4400979A)
• PBA / Board Numbers: L75S8NC_RDY
• Compatible Models: QN75Q80RAFXZA, QN82Q70RAFXZA
• Supported Version: Check white sticker on your board to confirm version match
• Product Type: LED Driver Board

Common TV Symptoms Fixed

• No Picture / Black Screen: TV powers on but display stays dark or backlight fails to illuminate.
• Dim or Flickering Backlight: Uneven brightness, flickering, or partial backlight zones not working.
• Power Issues: TV shuts off unexpectedly or fails to maintain stable power to the display panel.
• Audio / Input Failure: TV has sound but no image, or inputs are unresponsive due to driver board failure.

Fitment & Ordering Guidelines

• Verify the white sticker part number on your existing board matches BN44-00979A or BN4400979A before ordering.
• Confirm your TV model suffix and version code match — check the label on the back of your TV.
• Basic electronics experience is recommended for installation.
• Looking for other parts for this TV? Search QN75Q80RAFXZA compatible parts

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