What about a flat screen tv on top of the refrigerator? Will electromagnetic rays screw it up?

I had a regular tv on top of my refrigerator for a few years, and took it down to put it in my daughter’s room. It had a big green blotch tint in the lower right quarter. My friend, an electrician, told me it was because of the electromagnetics from the refrigerator. When I put it back on, the blotch disappeared. It would only be blotch free on top of the refrigerator. Does anyone know?