Alcatel 5007u backlight issue


My Alcatel 1v 5007u backlight stopped working...

It was malfunctioning sometimes but it gave out last month if I pressed on the borders of the screen it sometimes would come back to life but this solution stopped working...

I already disassembled the phone and removed the board, then reseated all the cables and the problem persists, so I think it's not the connections, just wondering if is some component of the mainboard or the backlight itself...

Is there anything I can do to test the components of the phone?

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