Yeah, because I have tried the channel SCAN, made sure the TV setting is to AIR rather than the CABLE ,and because the rear TV works perfectly, I have swapped where the TVs connect to the antenna and the rear still works great but the front is the same, it seems the most likely is that the tuner at fault. Just seems odd that the TV will show one single channel perfectly but all others act as if there is no antenna connected. I have yet to try a park cable. Wonder if that will make any difference?