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?
 
If you can source it, try to boot it with a known working Power supply. Sometime power brick can cause such boot issues due to inconsistent power current/voltage.