I pulled this from my 55" frame tv after the screen lost the battle with my kids Nintendo sword.....it wasn't my kid who broke it.  Bourbon+Nintendo=sadness.  This includes rne wifi card.  There is probably nothing wrong with your but you get it anyhow. 

BN94-17843F Samsung Main Board, BN97-19791E, QN55LS03BAF, QN55LS03BAFXZA, QN85LS03BAFXZA, QN65LS03BAFXZA, QN75LS03BDFXZA

BN94-17843F Samsung Main Board, BN97-19791E, QN55LS03BAF, QN55LS03B...

Description

PART NUMBER: BN94-17843F

BOARD NUMBERS: BN97-19791E

MODEL NUMBERS: QN55LS03BAF, QN55LS03BAFXZA, QN85LS03BAFXZA, QN65LS03BAFXZA, QN75LS03BDFXZA

PART TYPE: Main Board

TV TYPE AND SIZE: LED, 55" - 85"

MFR PART NUMBER: Samsung BN94-17843F