Hi, my M300 has just developed an issue where the screen is completely black and blank.
In a dark room you can see a slight blue sheen and that the backlight is very slightly activated, however nothing is visible on screen.
The unit is definitely powered on, because I still get haptic feedback when holding the power button. If I hold the power button down I also see a brief flash on the screen as if it's trying to turn the screen on.
I wanted to try and restart it, but holding down the power button does nothing (vibration aside) and despite searching online, I can't seem to find instructions on manual restart/reset aside from holding power button.
I updated to the latest firmware a few days ago, and the unit seemed to have become a little unresponsive/laggy just prior to this happening yesterday.
I've contacted HIBY support but they are currently out of office until after 17th February (Chinese New Year period).
Any help/ideas please? I was hoping the unit would run out of battery and I could then recharge and possibly restart, but 24hrs later it still has charge so will have to wait.
Thanks