I had bought a Taito Dff pcb set ,but the pcb is a normal ps4. I had format the disk and reinstall a normal PS4 system . But now I had met a problem that I can start the first start PS4 setup ,and when it finished , normally it should go to ps4's xmb ,but it show nothing only a black screen with PS4 sound. If you push the power button ,the shot down screen will be show up and power off the ps4. If anyone know how to make it corrrect ? Thank you all very much.