Samsung UE40D5500 main board BN41-01660B BN94-05268 BN94-04465
There is a new NAND flash K9GAG08U0E at board, tested before shipping.
100% working.

PCB markings:
BN41-01660B 
BN41-01660A 
BN41-01660

Assembly variants (all compatible):
BN94-05268A
BN94-05268B
BN94-05268G
BN94-05268F
BN94-05225Y
BN94-05065C
BN94-05188V
BN94-05225Z
BN94-04465B

For models:
UE32D5500 UA32D5500
UE32D5520 UA32D5520
UE37D5500 UA37D5500
UE37D5520 UA37D5520
UE40D5500 UA40D5500
UE40D5520 UA40D5520
UE46D5500 UA46D5500
UE46D5520 UA46D5520