u/Aggravating-Shift253

I have a Toshiba fire TV 70 inch when I connect my PS5 to it it flickers off for 10 seconds and then goes back to the screen and This loops for every 15 seconds. Can anyone give a solution? I’ve tried a different HDMI ports and different HDMI cables of troubleshooting called up to Toshiba Ps5 and fire TV. There is no solution. Can somebody please help?