I have a 50" Panasonic 3d tv and I'm connecting a sony bluray/DVD player to it via HDMI, when the player boots up the Sony blu

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Dec 15, 2014
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I have a 50" Panasonic 3d tv and I'm connecting a sony bluray/DVD player to it via HDMI, when the player boots up the Sony bluray screen comes up but then disappears, I can then do nothing with it. I've tried the player and lead on another tv (Sony) and it's working fine...help!