Hardware Ps vita screen issue

[DarkEvo]

I own a ps vita 1001 (3G model) in good condition but recently my screen won’t work. If I turn on my vita, I can heard the sound and the touch screen still responds. However, my screen never shows, it’s always all black. Is there a way to fix this issue? I don’t mind tearing down my vita. Any answer will be greatly appreciated.

Thanks in advance.