samsung pn51d490a1dxza have sound and no video

[vectravl]

My mother TV Samsung pn51d490a1dxza about 3 yrs old, she turn on have sound but no pic.Used Flashlight nothing only black.I guess maybe power supply board problem.Please help.Beside test with DVD player,cable box the same only black screen.Thanks a lots

[Pentium4]

Re: samsung pn51d490a1dxza have sound and no video

Upload some clear pictures of the boards so the experts have something to work with, and have a multimeter ready