The Sharp Roku TV has indeed been a cost-effective deal among them all since it is quite affordable compared to others with similar features.
My experience with the Sharp Roku TV had been a fairly productive one. The picture was crisp, and the audio, clear. The inbuilt Roku capabilities were, as usual, exhibiting a top-notch performance.
Everything was going as expected until the Sharp Roku TV screen went pitch black.
To fix the issue, I went online and read Roku's customer support pages and several user forums. I compiled everything I learned into this comprehensive guide so that you can fix a Roku TV showing a black screen of death.
The black screen on Sharp Roku TV indicates faulty power cables or damaged PCBs.
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 take a comprehensive look at these issues and their possible fixes.
Restart or Power Cycle the TV
Try restarting 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 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
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.
Try changing the outlet you have connected 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
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 gone 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 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 content from streaming services 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.
Try changing the connection to a different HDMI port if the current connection is a bit patchy.
Check for Updates
Another RED flag that you cannot overlook is to leave the system outdated. The issues that could manifest in an outdated device are plenty, the black screen being one of them.
Outdated software is also the primary reason most Roku devices face screen freezing issues.
If you have intermittent outpourings of black screens, try checking for updates on the TV.
Follow these steps to check for updates on your Sharp Roku TV.
1. On the 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, try refreshing the router and check again.
Check the Dimming Settings on The TV
Some Sharp Roku TV models may have 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.
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.
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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?
Interferences 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.