Black Screen On Sharp Roku TV: How To Fix [2023]

Black screens are a boon to modern Smart Televisions. And when your Sharp Roku TV goes black, it usually indicates something much more sinister than a common software glitch.

My experience with the Sharp Roku TV has been a fairly productive one. The picture is crisp, the audio, clear, and the simple Home screen. The inbuilt Roku capabilities were, as usual, outputting top-notch entertainment.

One day, I found my Sharp Roku TV screen to put up a Black screen. Even if I had managed black screens a few times on my other TVs, with this model it was a bit different. Here's how I fixed it:

If your Sharp Roku TV shows a black screen, check the cables and restart or power cycle the TV. Check the backlight panel of the TV and HDMI connection with external devices, if any. Check for pending updates and the dimming settings on the TV. If none of the above works, hard reset the TV.

Let's now gander at a few instances that may have triggered the black screen on your Sharp Roku TV:

ScenarioCauses and Fixes
Sharp Roku TV showing black screen on changing input (HDMI)Cable issue; check and reconnect the input. Replace the cable if faulty
Sharp Roku TV black screen upon startupFaulty power supply; check the power cable and switch the supply to another outlet
Can see image dimlyDamaged backlight panel; contact the customer services
Other scenariosCheck the TV settings (Dimming Settings); factory reset the TV
How Sharp Roku TV shows black screen
Sharp Roku TV Black Screen
Sharp Roku TV Black Screen

Here are my recommended fixes to resolve the Black screen issue on your Sharp Roku TV:

Why Sharp Roku TV Screen Goes Black?

Now, the exact reasons for a TV screen to turn black are plenty. But for the most part, this abrupt occurrence can be attributed to a couple of things - the usual suspects - as they say!

Here are the most probable causes for your Sharp Roku TV screen to go black:

  1. Power supply issues (including faulty cables and connections)
  2. Faulty backlight panel
  3. Broken Motherboard
  4. Ill-optimized TV settings

In the case of hardware issues, which make up almost all of the plausible causes, there's little you can do to fix it on your own unless you're really adept at dealing with electrical components.

Nonetheless, there are a few tips and fixes that can either get the issue to dissipate or enlist you in figuring out the exact cause.

Let's look at them now, shall we?

Restart or Power Cycle the TV

As a preliminary fix, restart your device immediately after the screen has gone black and unresponsive.

The easiest method to do so is to perform a power cycle test on the device. Simply unplug the power cable and plug it back in after a few seconds.

A power cycle test will refresh the system and clear any bugs that might cause the black screens.

It will also help make the system more efficient and faster. Try this step, especially if you feel that your Roku TV has become slow recently.

You could also try and restart the TV using remote commands. Press these buttons on your Sharp Roku TV Remote in succession to restart the TV without plugging out the power cable.

1. Press the Home button five times.

2. Then, the Up button once, followed by the Rewind button twice.

3. Finally, press the Fast Forward button two times.

It will take anywhere from 30 seconds to a minute to complete the restart process. If you were not able to restart the TV, try pressing the buttons again.

Check if you were able to solve the problem. If you still have the issue, check the next tip below.

Check the Power Cable of your Sharp Roku TV

Sharp Roku TV Backpanel
Sharp Roku TV Back panel

A precariously connected Power cable can cause severe issues like the black screen issue at hand. Always make sure you have a firm connection not only on the TV but also on the outlet.

An improper connection can cause banding problems on the TV. Banding problems cause a gradual shift in shades of the images belonging to a particular color.

A severe case of such an issue is the black screen. Once you have an affected screen, you may need to recalibrate the display to revert it to factory condition.

An inadequate supply can also result in black screens. If you have a blinking red LED light on the front of the TV, it is indicative of this issue.

Change the outlet you have connected to the TV to ensure proper supply. Check if the blinking LED has stopped after changing the outlet.

Check for Backlight issues on Sharp Roku TV

Sharp Roku TV
Sharp Roku TV

If restarting the TV was unhelpful, you should check whether the issue is a software issue or a hardware one.

One of the most common issues associated with black screens in Sharp Roku TVs is the backlight panel going bad.

Even though the picture we see is produced by the LED/LCD panel on your TV, proper illumination for these generated pixels is provided by the backlight panel situated behind the LED/LCD panel.

If this panel goes black, so does the TV screen. Fortunately, there is a simple trick you can try yourself to verify the problem.

Shine a bright light, presumably from a torch or your phone's flashlight, onto the screen while the TV is ON. Check for any dimly lit pixels around the torch-lit region.

If you can see dim pixels upon closer inspection, the backlight panel on your TV is the culprit.

The only remedy to such hardware problems is to replace the panel. If you have an active warranty, claim it for replacing the panel.

Replacing the panel otherwise can be costly. Shopping for a newer model may be a bit more feasible.

Check for HDMI Issues

If external devices, like a cable box or a game console, are connected to the Sharp Roku TV, check for HDMI issues.

Connecting an external device, like a Home theatre or an AVR, through an HDMI connection can be a bit demanding.

This is because not all HDMI cables may be compatible with the intended use of such devices.

Proper selection of cables is paramount when talking about a content-based application.

If you intend to capture or stream movies or shows from streaming platforms like Netflix or Hulu, you may need an HDCP 2.2 supported cable. HDCP is a content protection protocol that regulates the transmission of media across various platforms.

A high-speed HDMI 2.0 cable may also be recommended in general.

Also, change the connection to a different HDMI port if the current connection is a bit patchy.

Check for Updates

Sharp Roku TV
Sharp Roku TV

Another RED flag that you cannot overlook is to leave the system outdated. The issues that could manifest in an outdated device are plenty, black screens being one of them.

Outdated software is also the primary reason most Roku products face screen freezing issues.

If you have intermittent outpourings of black screens, better check for updates on the TV.

Follow these steps to check for updates on your Sharp Roku TV.

1. On the customizable Home screen, click and open the Settings icon.

2. Select the Systems option and click on System Update.

3. Click on Check Now to scan for updates manually.

Apply any updates left after the scan and restart the TV. If you have issues with the download speed on your Roku products, try refreshing the router and check again.

Newer Sharp Roku TVs also feature Automatic software updates along with several other features like Private Listening and access to thousands of streaming channels. Use the free Roku Mobile app to avail these features and many more.

Check the Dimming Settings on The TV

Check the dimming settings on the TV
Check the dimming settings on the TV

Select Sharp Roku TV models with varying screen sizes feature an auto-dimming feature that automatically adjusts the brightness of the screen depending on the time of the day and the abundance of light.

The Optical Picture Control Technology (OPC) may at times be unwieldy and dim the screen all the way down to pitch-black darkness.

To turn OFF the feature, head to the Settings menu on the TV and click on Advanced Settings. The OPC option will be present on the top. Switch the option to OFF and restart the TV.

Alternatively, you could also turn OFF the Auto-contact option within the same Advanced settings menu to disable any automatic dimming settings.

Hard Reset the TV

A reset will clear the cache memory along with all your personal preferences that you have made on your Roku TV, giving you a clean slate to start with again.

You can hard reset the TV using the reset button on the back of the TV.

Press and hold the reset button for a few seconds until the screen turns OFF and then ON.

If you have a pinhole button, use a pointed tool to do the trick.

Some Sharp TVs may not have a dedicated reset button. In such cases, the power button itself will act as the reset button. Press and hold the power button to reset the TV.

If the screen is visible and the black screens are not persistent, try resetting the device using the system options.

Follow these steps to factory reset your device.

1. On the Home Screen, click and open the Settings icon.

2. Click on the System option and then select Advanced system settings.

3. Select Factory Reset.

4. Enter the Special code as shown on the bottom right corner of the screen.

5. Click OK to confirm and start the process.

Reconfigure the Roku TV and check for further issues.

A reset can also help reconfigure the channels on your TV, effectively negating any channel issues on your Roku TV.

Final Thoughts

Sharp Roku TV
Sharp Roku TV

Apart from the above-mentioned possibilities and fixes, a faulty motherboard or PCB can also make your screen dead.

A renounced troublemaker of the said issue is the T-CON board that controls the translation of video signals. If you have a fried T-CON board, you have no picture.

You could try and replace the board yourself, but it can be a bit challenging. Call in on an expert or try contacting the Customer services of Roku or Sharp for a better alternative.

Consider replacing the TV since replacing a dead backlight panel or boards can be a bit cumbersome and, if not always, a bit pricey.

Happy Streaming.

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Frequently Asked Questions (FAQ)

How long do Sharp Roku TVs last?

If not troubled by faulty hardware issues, a Sharp Roku TV, much like any other Smart TV may last anywhere from 7 to 10 years max. And I must emphasize that such a prediction would only happen under ideal circumstances. Realistically, give it about 5-7 years.

Does interference cause Black screens on Roku TVs?

Interference can affect the connectivity and streaming capabilities of a Roku TV. But that doesn't necessarily make the screen go black unless the stream itself goes black. So to answer the question- No, interference cannot affect the display capabilities of your Roku TV.

About Doug Stevenson

Hey! I'm Doug, My passion for tech started by fixing phones and computers for my friends and family.

I started Blinqblinq to give reliable tech advice to anyone who needs it, for free! If you have questions on anything tech-related, feel free to contact me.

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Doug Stevenson

Hey! I'm Doug, My passion for tech started by fixing phones and computers for my friends and family.

I started Blinqblinq to give reliable tech advice to anyone who needs it, for free! If you have questions on anything tech-related, feel free to contact me.

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