Forum Discussion

Sammij24's avatar
Sammij24
Newbie
6 years ago
Solved

Why won't my Roku TV screen turn on?

I've had my TV for almost 2 years and all of the sudden after I turn it off the screen goes black and the TV doesn't come on the red light for the remote sensor stays red even though I press the powe...
black screen
  • RokuDanny-R's avatar
    RokuDanny-R
    3 years ago

    Hi Community users,

    Thanks for the posts.

    If you are experiencing an issue where your Roku TV screen will not turn on, this may be related to a hardware problem. Please contact your TV's manufacturer directly to report this issue and request additional support. Each Roku TV manufacturer provides direct support and warranty services for their products running the Roku OS. 

    For a list of Roku TV manufacturers contact information, visit our Community post here: Contacting Support for Your Roku TV

    We will be closing this thread out.


    Thanks,
    Danny

CaseousCalc's avatar
CaseousCalc
Binge Watcher
4 years ago

I am posting this solution for anyone else in the future who may experience this problem.

My TV was the Sharp Roku LC-58Q7330U.

My problem was that it would no longer turn on. No sound, no backlight, no color in the screen when you put a flashlight against it. The red led indicator light still worked, and it would go from bright red to dim red, blink twice, then go back to bright red and repeat this cycle every 10 seconds.

Solution: Turns out it was a single backlight LED that went out. I verified this by checking that the power supply board was outputting 200v to the backlight, but the lights were not turning on. I also verified that the 12v output to the main board was functioning. I got a backlight LED tester from Amazon, found the faulty LED, and replaced the strip. TV is working now.


A single LED going bad, out of 50, and it bricks the TV with no useful error code...ridiculous!

  • Nascar2555's avatar
    Nascar2555
    Channel Surfer
    4 years ago

    Where do you buy these led strips?

    • CaseousCalc's avatar
      CaseousCalc
      Binge Watcher
      4 years ago

      I found them cheapest on Ebay. Once I identified the part number off the strip, I searched it. Mine was this listing. I only replaced the one strip (out of 5) that had the defective LED on it (no need to replace all the strips, they're a pain to remove and not worth it for this junk TV). This video and this video have the basics of doing the repair (watch a few different vids to get the idea). I did not remove  the entire paper backing, I only cut out the paper overlying the problem LED strip, and taped it back in, because removing all the paper is a pain. This is the backlight tester I bought, don't shock yourself with it.