Got the same problem. I solved it by buying a outlet switch. If you turn the screen off and on for a couple of times the picture will stay and keeps on running till you switch of your machine. So it's basically just a starting problem. Somestimes it takes about 5 min until the screen finally stays on - sometimes it works at the first time. I heard from an tech student that it's related to the logic control of the screen. So he said if I want to fix this I should buy another screen panel - not the logic board, because the logic control is in the screenpanel. At least that's what he said. I took the cheaper option and just bought an outlet switch for 2€ :)