My tv is flashing bright white like a flash from a camera. It isn’t just a button or anything flashing it is something bright white like if it was taking a picture. The flash happens every 15 minutes or so. Mostly happens when it is off but has recently started happening while I am watching tv
The issue you are experience appears to be a hardware related issue. Have you tried contacting the TV manufacturer support yet to inquire further? I'd suggest starting there to see what options or suggestions they can provide. Each Roku TV manufacturer provides direct support for their products running the Roku OS.