Vizio Main Board for M70Q7-J03, Y8389602S, 602B, 1P-0209X00-4010. Pulled from a working 70 Vizio TV model# M70Q7-J03 that had a cracked screen. Part# Y8389602S, 602B, 1P-0209X00-4010. I only guarantee that the board is in proper working condition, NOT that it will fix your TV. Please ensure the item is properly installed, and that you ORDER BY PART NUMBER. If you are not a technician, do not assume the board is bad. Please use the “Changed My Mind” option if you need to initiate a return. Please ensure you package the return item properly. Thank you for your business!!