Hello, I own a JVC HD-ILA HD tv model number HD56G647. The problem we are having is that when the remote is used, sometimes the TV can be turned on with the remote, and the volume will go up and down, the other times it won't work. The channels will change. We changed the battery and still it works sometimes and then again not other times. Our universal remote works the same as the JVC control, sometimes, sometimes not. Any help?

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