Default Odd display issue P600

Hi

Came home from work today unlocked the tab but the display had gone murky down one side. Thought this a bit off so rebooted, display looked like it had returned to normal. It went into standby and I went to unlock it but the display wouldn't come back on!

The capacitive buttons light up at the bottom, if I remove the pen it makes the pen removal noise, if I press the lock button I can swipe the screen and the unlock sound occurs, but nothing from the display at all. I reboot the device and it's fine till I lock it again.

It was running stock TW rooted. Have factory reset and still the problem remains. Any suggestions?

Cheers

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