A similar thing happened to me. I have ordered a replacement screen and had a local cellphone service center to to change it. I was present while the technician was working on it and I've occasionally glanced at him to see his progress. I've noticed notification LED to flash and realized that he was replacing the screen while the device is on. The new screen would not display anything and after he had connected the old one with cracked digitizer when I've asked him to, it would not work either. I know that the motherboard is still operational as the tablet goes through the bootup process making usual sounds, LED flashing and buzzing... The technician keeps telling me that screen I have supplied is faulty. Doing some online research, it seems that he blew the backlight filter (fuse resistor). Am I correct with my guess? Can Sony replace this part (I've seen some Youtube videos micro soldering replacement resistors)?
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