Vizio M55Q8-H1 Serial LTYWZLKW MAIN BOARD, POWER T-CON DRIVER KIT. MAIN BOARD – 715GB003-M0B-B00-004G. POWER BOARD – 715GA120-P01-000-003M. PLEASE NOTE: Avoid ordering incorrect parts. This model may use several different parts sets and panels for the same model number. Never order parts by TV model number alone.