My Z Force 2 is showing a black screen, but I can tell it’s not dead. I tried the online suggestions of holding the power button down for 30 seconds (it cycles through the “restart” sequence, with all of the attendant sounds, but no visuals), and the second tier suggestion of holding down the power button while also holding down the volume button in the decrease volume position. No luck with that either. Now, even though I’m no longer messing with it, every so often it makes a little buzzing sound, with a bit of vibration, like it’s trying to come back to life. So, first of all, I don’t know if I need to replace the “display and fingerprint sensor” (is that the correct diagnosis?) or is something else at fault, and how would one tell? Secondly, if this IS the correct diagnosis, then there’s the problem of trying to power off the phone, while having no access to the display. And, I’m not sure I can drain the battery, but would taking it out suffice? Finally, do you think my phone repairable? Thx, Gigi