Part number can be found on a white barcode sticker.
Samsung BN94-14594D Main Board for LH55QBREBGCXGO (Version FA01)
Part Number: BN94-14594D
Part Type: Main Board
Manufacturer Part Number 1: Samsung BN94-14594D
Board Number: BN41-02711A
Part Type: Main Board
Known Models
LH55QBREBGCXGO FA01
LH55QBREBGCXZA FA01