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JVC Flat screen TV LT-37E488, Hard to hear narration or dialogue over music

On a variety of channels, whether watching movies or documentaries, we find that it is hard to hear the dialogue or narration when there is music in the background. The "background" music seems to dominate and make the person speaking very hard to understand. We have tried switching the "L" and "R" audio cables, even connecting "L" output from our cable box to "R" input on the TV. We have tried different sets of input connections available on the back of the TV. Nothing has helped. I have explored the JVC menus in Setup, but there doesn't seem to be anything to do. Any help would be appreciated.

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When only a half screen is produced, it is usually a upper or lower buffer board, if the top half is blank then it is the upper buffer, and of course if it's the bottom half then it's the bottom buffer board

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what does the error message say?

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I just bought Sony LCD 46 inches, with model KDL 46 V 2500 about less than 9 months,now TV lost digital channels, I tried every thing to program it but it's not working, when I program it the screen come up and stay about 20 minutes for searching digital channels then disappeared.and always no digital found.I don't know what wrong?

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I'm having the same issues

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