My loss = your gain. I was mounting this perfectly working and gorgeous Samsung QN65-Q70 (see data tag in photo for precise information) and had set it aside. It fell against a table and cracked the front panel. The only useful pieces to salvage were the speakers, the peripheral board, the remote, and the main control board. All are available on sale here on eBay.
I'm not a TV repairman, and I will NOT have any idea of the interchangeability between various model control boards or speakers. See the data tag image for the television here, and zoom in on the images from the speakers.
Check my other auctions for the other parts/components.