I figured out how to fix this today after reading all of the posts that said its "unfixable". The problem is due to Chromecast setup mode being stuck, if you have connected the tv to your wifi previously you will need to do the following
1. Using a phone or other google device, download and setup the "Home" app from google
2. The app should detect the tv on the same Wifi as your phone even with the tv being completely dark, (no screen, no red light)
3. Complete the tv's chromecast setup and skip through all of the other streaming bs, you don't need it for this
4. Once it has completed, the phone should indicate that the tv is on "stanby" or something to that nature. Essentially the black screen and no red light are due to chromecast having an invisible non-responsive "screen saver"
5. Hold down the power button on the side of the tv until you see the tv reboot, keep holding until it fully powers on and asks you to complete setup (language, time, tv channels, etc. )
6. At this point you should be good to go.