Facing TV Problems? Ask a TV Technician.
Hello, I’m Nathan, and I’ll be assisting you today. My livelihood depends on your positive feedback, so your satisfaction is my highest priority.
Sorry to hear you’re having trouble.
Are you sure you checked the right screws? The service documentation actually specifies that the 100x100 vesa pattern and takes an M4 screw size.
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It is not at all unheard of for vizio to have the wrong specs. That said, I've never seen a m7 screw used on their products, they are always metric, and always even numbers. Try threading the m4 and m6 in further. May need a longer screw, and it may not grab at first until you get deeper into the mount hole.
Did you get a coarse or fine thread screw?
If you're not sure about the ones from the bracket being correct, try swapping in the m4 screws used in the vizio plastic stand/base.