1. Get a better antenna. I went big. Here it is and it sits behind my TV. Really great reception compared to my neighbor's leaf. http://www.amazon.com/gp/product/B0024R4B5C/ref=CNET
2. Seek out some other device that has a tuner. Here's one I found at random.
http://www.amazon.com/HopCentury-Converter-Multi-Media-Recording-Functions/dp/B00RZCA7FE/
Bob
My first post. Bought a Samsung ln46c630 around November 2010. Have had cable all this time and have been quite satisfied with the tv. Can no longer afford cable so just cut the cord. Got a Mohu Leaf Ultimate antenna. Can pick up like 20 channels which is great. However, it doesn't last. If I change the channel or reposition antenna or do anything I lose all the channels and it's a couple day to try to do research/try different things to get them back.If I get the channels back, it soon happens again losing all the channels. Have made sure I'm not in store mode but in home use,... did the power on tv with tv button(not remote),press the volume then press/hold menu till reset appears and do default reset,...I make sure tv and air is my source,..I do the Plug n Play, make sure in home use, do the channel scan, etc. etc,..but receive or pick up no channels. I did the hold 'exit' button on remote till the reset comes on screen and went in that way. Turned off the tv/pulled out the plug and then turned back on after around 10 minutes. Basically, I've tried everything I can think of. I even tried pulling out the amplifier of the antenna and doing scan that way thinking it might be a problem with the antenna/amplifier. HOWEVER, I went and picked up another Mohu Leaf Ultimate and tv doing same thing. Because I've always had cable since I bought the tv I'm thinking the internal tv tuner might be the problem because it was never in use while I had cable. I read these tvs have been known to have tuner problems. I'm literally in tears over this. Please help. I cut cable because i can no longer afford it and now I might have to get the Samsung tuner fixed--a tuner that was never even used until now.

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