Yes! mine has done it a few times, only when I am surfing the web. It doesn't happen when I am playing games.
There are several threads on Reddit about it. From one of the posts:
It's believed to be something to do with the drivers on the Radeon chip. if you press Windows+shift+ctrl+b it'll perk the computer back up because it actually boots the drivers again on the chip. Most haven't had issues with it while running games(since it switches to the RTX, and it's a Radeon issue.) Also try turning Freesync off in the radeon chip settings, it's under Radeon Lite(in your programs).
I just found this Reddit reference tonight, and have not yet had a chance to try the " press Windows+shift+ctrl+b" option yet,, so I don't know if it works yet. (But even if it does, that's not he long term fix I'm looking for.
I've had this laptop for 5 days now and love it, but the screen suddenly going blank it frustrating! Enough to the point that I'm thinking of returning while I still can!