sony plasma monitor

[basic]

 

help please from all you kind members' my problem as follows'

   
ive have a sony PFM-42V1N monitor its playing up a bit,
there is power to the unit but no display. The standby light comes on and when you press the on button the light turns to green,
but no display.
i also tried this through my laptop with a vga lead but nothing

any help would be most wellcome, im a dab hand with a soldering iron and can work componet level.

many thanks
basicbri