VIZIO OLED55-H1 MAIN BOARD (X)XKCB02K021010X/JQ5KA2 756TXKCB02K021. Vizio OLED55-H1 Main Board (715GA847-M01-B00-005Y) 756TXKCB02K021. TV TYPE AND SIZE. This came off of a new working cracked screen tv. Please make sure you are ordering the right part for your television. Please refer to photos for item condition and sale contents. The photo is of the actual item you are purchasing.