The Tv has gone black. Power cycling over and over

I’m having this exact same issue. Was playing a ps5 game last night when the ps5 crashed. I went to boot it back it up and now the Tv has gone black. Power cycling over and over on its own. I’ve tried unplugging, holding the power button and plugging back in. Also tried the remote thing. None of it has made any difference since last night. Tv is only 3 years old.