Is your Sharp Roku TV screen suddenly turning black, but you still have sound? Or perhaps you’re dealing with a blinking red light? In this article, we’ll explore the possible causes for these issues, their easy fixes, and how to use the reset button when your backlight isn’t working.


The Black Screen Phenomenon: Identifying Causes

Sharp Roku TV Black Screen

Experiencing a black screen on your Sharp Roku TV can be quite disconcerting. This issue can stem from several sources:

  1. Software Glitches: Sometimes, the software may face issues that cause the screen to go black.
  2. Connection Problems: Loose or faulty cables can cause a black screen.
  3. Backlight Failure: The TV screen’s backlight might not be working, resulting in a black screen.
  4. Hardware Failure: In some cases, a hardware malfunction could be the root of the problem.

Black Screen with Sound: What Could be the Problem?

If your TV screen is black but you can still hear the sound, it’s likely that the problem lies with your TV’s backlight or the video output. In such cases, the TV is still processing audio data, but the visual component is malfunctioning.

The Reset Button: Your Ally in Troubleshooting

Your Sharp Roku TV comes with a reset button that you can use to restore factory settings, potentially resolving any software glitches causing the black screen. The reset button is usually located at the back or bottom of the TV.

Press and hold the button for about 20 seconds, then release it. Your TV should restart, and the Roku logo should appear. If this doesn’t resolve the issue, it’s likely a hardware problem.

The Case of the Non-working Backlight

If your backlight isn’t working, it could be a sign of a hardware failure. You might be able to faintly see the picture on the screen when you shine a light on it. In such cases, professional repair or replacement might be necessary.

Red Light Blinking: Decoding the Indicator

A blinking red light on your Sharp Roku TV is an error indicator, typically pointing to a power supply or overheating issue.

If you notice the red light blinking, turn off the TV and unplug it. Let it sit for 15-20 minutes to cool down, then plug it back in and turn it on. If the red light continues to blink, consider seeking professional help.

How to Fix a Black Screen on Sharp Roku TV Easily

Here are some easy steps to troubleshoot a black screen on your Sharp Roku TV:

  1. Check the Connections: Make sure all cables, including the power cable, are securely connected. Also, check the cable for any visible damage.
  2. Perform a Power Cycle: Unplug the TV, wait for a few minutes, then plug it back in and turn it on.
  3. Factory Reset: If the problem persists, use the reset button to return the TV to its factory settings.
  4. Professional Repair: If none of the above steps work, it’s time to consult a professional repair service.


Experiencing a black screen on your Sharp Roku TV can be frustrating. However, understanding the potential causes, from software glitches to hardware malfunctions, can guide you towards an effective solution.

Whether it’s performing a factory reset, power cycling the TV, or seeking professional help, these steps can help you restore your TV viewing experience.