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Hello, No Signal either means the TV is not on the correct Video "Input" or that the box is faulty. Please get me the mode number off of the back of your TV, and also let me know how the box is connected (look at the back- it will be an HDMI cable, component cables, or something else.). Let me know.
Please get me the info requested above (scroll up to see all replies), and also let me know if you have the original remote for the TV.