HELP WITH PHILIPS PLASMA

[robertm643]

I HAVE A PHILIPS ( 50PFP5332D/37 ) PLASMA TV WITH AN ISSUE ....IT HAS NO PICTURE OR SOUND ...I PUT UPDATE FIRM WARE ON A MEMORY STICK AND DI NOT RESOVE ANYTHING .....PSB HAS IT CORRECT VOLTAGE  ....BUT THE RELAY LINE HAS 5V WHEN SWITCH IS OFF AND 0V WHEN THE POWER SWITCH IS ON.......THERE IS A GREEN LIGHT FLASHING ALL THE TIME IN THE BACK ..AND THERE IS A BLUE LIGHT ALWAYS ON IN FRONT OF TV ....CAN YOU HELP PLEASE .... ..THANKS