PANASONIC PLASMA TVs OSD OK BUT NO PICTURE FROM ONE OR ALL INPUTS

• Is there no picture from all inputs?
• If No; 'A' board is defective.
• If yes; 
• Disconnect CN A5.  Turn the TV On.  Does a white picture appears?
• If yes; A1 or D2 board is defective.
• If No; 
• Panel discharge occurs?
• If yes; D board is defective.  
• If No; 
• Disconnect the 'SU' board from the 'SC' board.  Turn the TV On.  Is there is a picture at the lower half of the screen?
• If yes; 'SU' board is defective.
• If No;
• Connect the 'SU' board.  Disconnect 'SD' board from the 'SC' board.  Turn the TV On.  
• Is there is picture on the upper half of the screen?
• If No; 'SC' or 'D' board, and possibly panel.
• If yes; 
• SD board is defective.