Just brought home a Samsung TXN2730F. I think something might be wrong with the antenna (cable) connection, but I just want to see if anyone has any ideas. Anything I hook up to the antenna connection flickers randomly. It just flickers for .5 seconds and makes a short pop sound. I cannot figure out what could be causing this.. defective TV? I've checked all cables, tried different cables, hooked up only VCR, and hooked up only cable TV, still flicks... any ideas or suggestions are greatly appreciated.