Onn Roku 70' TV Black Screen, what to do?

UPDATE: Just wanted to let everyone know, we did purchase the extended warranty from Walmart when we purchased the TV, they had told me we did not but I looked in my emails and there it was. Of course, this was after we took the TV to a repair center where it cost $212.06 to replace the power supply/LED drive board. 

Hi Johnsonboys4,

Greetings from the Roku Community!

We understand and appreciate the attempts to resolve this. If you are experiencing an issue where your Roku TV screen will not turn on or black screen, this may be related to a hardware problem. Please contact your TV's manufacturer directly to report this issue and request additional support. Every manufacturer of Roku TVs offers its customers direct support and warranty services for televisions that run the Roku operating system.
You can get in touch with them through this website, Hisense ContactUs, or by calling 1-844-334-2355.

Feel free to get back here and let the Community know if you still need a hand.

Warm regards,

Rey

I have the same issue today my tv just when black. I can hear everything but can’t see nothing I have only two years with it… I turn off the lights of from my living rooms and took my phone and use my flashlight to see if I can see anything to me it seem it could be the backlight need to be replaced. It’s not even far cuz I really don’t use the tv like that and I only have two years 

Same here. Purchased Mar 25, 2021 and today in December 29, 2023. First, screen went black but could hear the movie. Now no sound. I have done everything suggested with no resolution. 70” Onn Tv with Onn Sound Bar. Thanks Onn! Can’t afford a new one.

A family member bought this for christmas 2022 for a baby's room with one yr warranty.  Literally less than a month after the warranty expires the tv goes black.  Only used maybe 1 or 2 times a month.  I talked to ONN customer service. 1. Couldnt understand a single thing she was saying. 2. Did all the resets and troubleshooting 3. Told me the warranty expired 20 days ago and i am s*** out of luck.  Never ever buy an ONN tv is all i can say.  Mine lasted 1 yr and 24 days and was hardly ever turned on.  Piece of junk

I had the same issue, I did all the things that were suggested and still had the issue. I finally factory reset the audio and picture settings and it didn't do that again. Once I changed the picture settings for gaming it turned black within a minute. I reset the picture setting and haven't had that happen. 

I hope this helps you out too.

08/17/2024 UPDATE: I started having the black screen again and I did the whole factory reset on the t.v. and still happened I did figure out that it would only happen on the HDR mode so I set the picture brightness to darker and it's been staying on. Fingers cross that I don't have the issue later. 

GO BILLS!!!!!!!!!

Ours just did the same thing at the 2 year mark. Didn't even try customer support after reading how terrible they are. I tried everything including taking the whole thing apart so I could clean and reseat every connection inside. I checked the boards for signs of damage or overloading and everything looks like new. I finally resigned to the fact that it's not coming back. Picking up a new TV tomorrow 😡