NEC nlt32xt1 lcd tv picture in a black smog

[andy smethurst]

Hello, This tv powers up with no hesitation,but the screen shows mainly black with a darker than usual picture that starts from halfway up,and to the R.H side of the screen,and floats towards the top and back again,and gives the apearance of viewing the picture behind a moving black smog cloud that has smooth gaps in it where the picture is visable,(very hard to describe this one)
Ive never come accross this symptom before,but I suppose LCDs have different symptoms to CRTs.Would anyone know where to look,i.e power board,or main board,or backlight and inverter? Thanks for any leads to this problem.

Regards:Andy.

[Dgtech]

Re: NEC nlt32xt1 lcd tv picture in a black smog

Pictures of this set would help. No inline pictures.