Hi. One day my tablet went out. I checked and everything works except the screen. beeps are heard but the screen was black. if I connect the tablet to the TV with the MHL cable I can see the screen without problems. I changed the screen, thinking it was all I could affect. I do not know what part of the hardware must be failing. I've aiiilready changed the Flex cable and a screen ... and nada.alguien knows the solution? Thank you!!!