Solved Power Comes On Then It Just Gives 1 Single Red Blink Television

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I have a tx55dx650b power comes on then it just gives 1 single red blink every 4/5 seconds is this a power issue or a screen issue please help

@James Cooper Here’s a link to the service manual for the TV. On p.23 it shows that the error code that you have, indicates that it could be either the LCD panel or the P board. You could try performing the Self Check procedure as outlined on p.22 but if that is no good then you may have to start testing the P board voltages etc The schematics for the P board begin on p.77