Tested & Ready to Install! U751 for Vizio M656-H4. Key Features & Benefits Compatible TV Model: Vizio M656-H4. ? Why Choose This Main Board. Genuine OEM Quality: Original Vizio replacement part for reliable, long-lasting performance. Fully Tested: Pulled from TVs with damaged screens, lit up & tested before disassembly. Easy Installation: Designed for a straightforward replacement process. Restores Full Functionality: Brings your Vizio TV back to peak performance for smooth, uninterrupted viewing. Always order by part number to ensure compatibility. Boards may show minor signs of prior installation but are fully tested and guaranteed to work. Our friendly support team is ready to assist with identifying the correct part.