I uploaded this video just to post it on Reddit asking for the fix.
The problem for me was the black silicone for the viewfinder blocked the sensor which made the camera thinks that someone is looking at the viewfinder which makes the LCD turn OFF during shot.
The solution for me was the simplest thing ever. Just push the silicone back in place and that's it!
I know this fix might not help people with problem with the actual LCD screen but I hope this solution can help others with this same silly problem.
18 фев 2016