hitachi 32pd5300 help needed

[aliris]

Hello...
I'm new here..
just need advice on the problem that I am having with my plasma
model hitachi 32pd5300

problem : when turn on, the red LED turn on a few secs and that it change into blinking orange/amber..

no picture or sound at all...

p.s I manage to get into test/diagnose mode by pressing two buttons simultaneously...the displays turn on and displaying alternate colour (white, black, green, blue etc)

any help is appreciated..

thanks