Nvidia Shield TV Pro 2019 stopped booting

Captainrizal

Beginner
Hi everyone! My 4-year-old Shield TV Pro has stopped booting up; it intermittently displays the Nvidia logo before going blank. I’ve tried all possible troubleshooting steps, including a factory reset, but nothing seems to work. My Shield TV is connected to a Marantz Cinema 50 receiver which is connected to a projector. On suggestions by Nvidia customer service, I connected it directly to the TV and attempted a factory reset using an external keyboard, but that was unsuccessful as well. I'm not sure what to try next. Any suggestions?