My backlight is dead

Hi guys!

I was playing on my Vita the other day and out of a sudden my screen turned black. There was still a sound, I still could hear the interactions with all the buttons as well as the touchscreen. I thought it is a glitch, but nothing could help me - neither reboot, restoring data base through safe mode nor restoring the system. I decided to order a replacement screen, the result was exactly the same. So it's backlight.

I cannot locate a fuse that is blown probably, has anybody got any idea where it is?

Any help would be appreciated!

Thanks in advance guys!