Introduction: Decoding the tp.ms3458.pc757 In the world of modern electronics repair, the mainboard is the brain of any LCD/LED television. Among the myriad of board codes used by manufacturers, the designation tp.ms3458.pc757 is a specific and common identifier found in many mid-range smart TVs, particularly those from brands like Hisense, Element, Westinghouse, and certain Chinese OEM (Original Equipment Manufacturer) models.