When a set will not power on, loses inputs, or shows a picture with no sound, the main board is usually the first suspect.
Every listing here is a replacement board pulled by model and by the numbers printed on the original. Search by the model number on the rear label of your set, then match the board number on the sticker of the part you are replacing. Sets built on the same chassis often share a board across several screen sizes, so the compatible models list is longer than the title.
Numbers to compare before ordering include the main board part number, the LG or Samsung interchange number, and the panel or chassis reference. If two of those three match, the board is the right fit. Boards ship from US stock with tracking.