Hisense 40H4F no backlight but turns off after splash screen

[frannyjunk]

So I have this Hisense tv where the backlight does not come on. But when it is turned on, when I shine a flashlight on the screen, I can clearly see the splash screen then it turns off. I looked at the mainboard and was expecting to see bulged capacitors, but they all look fine. I unplugged the backlight from the mainboard, and get the same symptoms (i.e. no backlight, dark splash screen then just a black screen). Is this just a backlight issues? Do Hisense tvs turn off by itself if the backlights are unplugged or are bad? Or is this a mainboard issue?

TIA.

[frannyjunk]

[Diah]

no risk its just 40 size.... take the screen apart you will see the led defect

[lotas]

Basically, when the backlight doesn't work, Hisense triggers a protection switch and the power supply cuts off the secondary voltage.