Check the listing for details. TCL 55S446 Main Board 30800-000415. Condition: Used. Listed at 59.95 USD. Part Info: Brand: TCLPart Number: 30800-000415Board Number: 40-R51MTB-MAB2HGCompatible Models: 55S446Important Notes: The part number is found on a sticker on the front of the board. The part number MUST match the part number from the board you are replacing, or this will NOT work for your TV even if the model listed is correct. If you are unsure of how or where to find the part number, please message us for assistance BEFORE making any purchases, we would be happy to assist you. Our circuit boards are generally removed from Brand New, Tested, Working TVs that were damaged in shipping and beyond repair. Circuit boards do not include any manufacturer packaging and may show signs of prior installation. Parts are New or Like New! - The TVs we get our parts from are coming from Major Retailers. Parts are generally pulled from TV's that were damaged in shipping or during setup and never used. Rarely parts are from TV's with some use, however they would need to be returned within the retailers return timeframe, so used parts generally have under 3 months of use on them.