Is my LCD Display dead?

Hi,

Yesterday i was using a video software (as before) for some minutes and suddenly i heard a noise and the display turned off. I was using an external monitor which kept working like nothing happened. Then i passed my last 10 hours looking for a solution and tried many suggestions and nothing worked.

Here some details:

- Backlight (apple logo did not light up)

- Camera still works properly

- I use a external monitor to work

- I opened this mac (just the back lid) and did not smell anything different

- I checked in about this Mac and still recognize the built-in display

- I don't know what else to do anymore

Does anyone have a suggestion what it could be? I searched this forum and did not find a similar case.

Thanks