Vizio D65U-D2 wont stay on after PSU, T-con, and Led Driver Board Rep?

Hello, I replaced all of the above boards in my TV and it is still not working. The boards that I bought from eBay were confirmed to be working from donor TVs that had cracked screens, so I could have gotten bad boards technically. A lot of other people have been having this problem with the TV not staying on after two minutes. The screen suddenly goes black, and the LEDs go out. The power stays on though. I don’t know what else to Hello, I replaced all of the above boards in my TV and it is still not working. The boards that I bought from eBay were confirmed to be working from donor TVs that had cracked screens, so I could have gotten bad boards technically. A lot of other people have been having this problem with the TV not staying on after two minutes. The screen suddenly goes black, and the LEDs go out. The power stays on though. I don’t know what else to replace.

any help?