Why does my display all of a sudden turn off [Lumia 730 with Windows 10 TP]?

I have installed windows 10 on my lumia 730, Sometimes, there will be no display on my phone, but the phone will be working. I need to remove my battery and put it back, then I need to start the phone to see the display back

This may be due to the windows 10 you use.
Did you already feedback this to Microsoft.
You could try a hard reset to see if this solves the issue.
Otherwise you need to wait for an update which may fix it or rollback.

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