I’d like to post an update, I was able to unstuck the curtain by tapping the opening with a thin metal stick. Didn’t have to force or anything, just gave it a gentle push when powering up the TV.
It happened again recently and the same trick worked a second time. I’m afraid it won’t work forever and would like to permanently block the curtains open (so they stay open even when powering off the TV). Any suggestion on how to achieve that is appreciated.
