Samsung BN44-00978A LED Driver

The Samsung BN44-00978A (BN4400978A) is an OEM replacement LED Driver / Power Supply Board compatible with Samsung QLED televisions including QN49Q70RAF and QN49Q7DRAF. If your Samsung 49" Q70R/Q7DR TV won't power on, has no backlight, or shuts off unexpectedly, a failing LED driver is a common cause — this is the direct OEM-spec replacement.

Specifications & Board Identifiers

• Part Number: BN44-00978A (BN4400978A)
• PBA / Board Numbers: L4957NC_RHS
• Compatible Models: QN49Q70RAF, QN49Q7DRAF
• Product Type: LED Driver / Power Supply Board

Common TV Symptoms Fixed

• No Power / Dead Set: TV completely unresponsive, no standby light
• No Backlight / Dark Screen: Audio works but screen is dark or dim
• Random Shutoff: TV powers on briefly then shuts off
• Clicking / Popping Noise: Audible clicks from TV with no display

Fitment & Ordering Guidelines

• Verify the white sticker part number (BN44-00978A) and board number (L4957NC_RHS) match your original board before ordering
• Basic electronics experience recommended for installation

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