I have a "JVC" AV COMPULINK TV MODEL AV 31BM3. When I try to auto program or manual program the tv, it scrolls through the channels but will not keep them in memory. As a result, I can only get channels 2-16 and channel 61. The channel guard is locked and I can't get it unlocked.How do I fix this problem? The tv screen will also occasionally go black with a fine horizontal ine across the screen. If I hit the tv on the cabinet side, this clears up for a while before the screen goes black again.Cna this be fixed easily? The picture quality is great when the the screen is not going black. I also have lost the original remote but Ibought a universla remote. Are their features on the original remote that are not on the universal remote which prevents me from unlocking the channel guard? Your suggestions please. Jack Cribbs

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