I was using the Photon Q, closed the slider, wanted to reopen it - but the screen did not turn on anymore. It didn't fall down, no water accidently came into contact with the phone but the screen was off. However, the phone was still working (I was able to call it) and when guessing where the unlock button on the screen is, I got the vibrating feedback. So obviously, there's something wrong with the screen.
However, it's not the cable connecting the screen with the device (which would have been the worst case scenarion according to CornholioGSM).
Any other suggestions or would you just try to replace the screen?