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Sharp TV Roku Not Working

Sharp Roku TVs are a great way to enjoy streaming your favourite movies and TV shows without needing to plug in a separate device. However, the reasonable price sometimes does not outweigh the number of issues that can occur with this system. If your Sharp Roku TV is not working, this article will provide you with a number of options to get it up and running again.

A Sharp Roku TV may not work if the firmware is outdated, your TV settings are incompatible or the hardware has malfunctioned. The interface and content will not load if your network is poor or if the Roku servers are down. The remote also needs working batteries and must be paired to the TV.

Couple watching TV at Home

I will explain these issues in depth throughout this article and will guide you through how you can overcome these issues. Sometimes it is a matter of changing the settings on your modem, which I will also explain further down.

Sharp TV Roku Not Working

Below are general troubleshooting tips that work with most problems you might face with a Sharp Roku TV. Even if you have a very specific problem, these methods can still be used. However, if they do not work, you can continue reading to find more fixes for your TV.

Update your Sharp TV

To update the Roku interface, you should follow the method below. This will remove any bugs in the previous firmware that may have been causing your issues.

Step 1: Press the ‘Home’ button on your Roku remote.

Step 2: Navigate to ‘Settings > System > System Update’.

Step 3: Select ‘Check Now’.

Step 4: If an update is available, confirm the installation.

Check Roku for System Update
Check Roku for any system updates

Hard Reset TV

A hard reset is very effective at clearing any small errors that may have occurred within the TV. This is done by completely discharging the TV and wiping all temporary memory. This does not, however, erase any of your saved preferences or downloaded content.

Step 1: Unplug the TV from the wall power.

Step 2: Disconnect any devices from the TV.

Step 3: Press and hold the ‘Power’ button on the TV for 30 seconds.

Step 4: Wait a further 10 minutes for the TV to fully discharge.

Step 5: Plug the TV back in and reconnect your devices.

Factory Reset TV

By performing a factory reset, you will erase all new content on the TV and return it to its original settings. After this, you will need to re-download your channels and re-enter all passwords and preferences. However, this is a very effective method of clearing issues with your TV.

Step 1: Press the ‘Home’ button on your Roku remote.

Step 2: Navigate to ‘Settings > System > Advanced System Settings > Factory Reset’.

Step 3: Select ‘Factory Reset Everything’.

Step 4: Enter the code on the screen to begin the reset.

Roku Factory Reset
Factory Reset Your Roku

Sharp Roku TV Not Connecting to WiFi/Internet

Sad couple watching TV

Provided your Sharp TV is up to date (using the method above), you may need to adjust your modem or router to resolve issues connecting to the WiFi. You should start by resetting the modem and router (if you have one).

Reset Modem and Router

Step 1: Unplug the modem and router from their power source.

Step 2: Wait at least one minute.

Step 3: Plug the modem back in and wait for it to reboot.

Step 4: Once the modem has rebooted, plug the router back in.

Step 5: Once your router has rebooted, test the internet again.

Reset the Network on your TV

You should also try resetting the network settings on your TV. This can be found under ‘Advanced System Settings’, following the method below.

Step 1: Press the ‘Home’ button on your remote.

Step 2: Navigate to ‘Settings > System > Advanced System Settings > Network Connection Reset’.

Step 3: Select ‘Reset Connection’.

Roku Network Connection Reset
Roku Network Connection Reset

Minimise Interference

Another thing to consider is whether or not anything is blocking or degrading your WiFi signal between the modem/router and TV. Ideally, your modem should be no more than 30 feet away from your TV if it can’t be in the same room. In saying that, it should also be at least one foot away.

If your modem is further than 30 feet away, you may need to consider using a WiFi booster to close the gap where the signal is lost. This device can be positioned equally between the TV and modem/router to boost the signal.

Otherwise, you should consider objects in your house that could be blocking the signal. These can include any of the following.

· Solid timber or concrete walls.

· Aquarium or hydronic system (bodies of water)

· Floor heating systems

· Metal

In addition to solid objects, there are also transmitting devices that can interfere with your WiFi signal. These have been listed below and should be minimised, if possible.

· Radios eg. baby monitors

· Microwaves

· Bluetooth devices eg. headphones

· Other WiFi networks

Modem or Router Settings

There is one particular setting on your modem or router that seems to cause issues with the Roku interface. This is a simple fix, but involves allowing special characters in your modem’s settings.

Step 1: Type your modems (or router’s) IP address into a web browser to open its settings.

Step 2: Use the password supplied in the modem/router’s user manual to login.

Step 3: Change ‘Block Special Characters’ to ‘Allow Special Characters’.

This setting will vary depending on which service provider you are with. However, many users have found this fixes their issue connecting to WiFi through the Roku TV.


You should also consider that the Roku servers may be down. This would mean that your internet connection is completely fine, but their computers are undergoing maintenance or have too many users. You can check if these servers are down through websites such as, or by calling the Roku support line.

Sharp Roku TV Remote Not Working

Frustrated old woman pushing remote tv

To start troubleshooting your Sharp Roku remote, you should first make sure there is nothing between the remote and the sensor in the bottom left corner of the TV. The remote uses infrared technology, meaning the IR light needs a clear path to ‘shine’ on the sensor.

You could also try resetting the TV or updating your firmware, which have been detailed above. Otherwise, below are some common issues with Roku remotes.

Check the Batteries

It may seem simple, but you should check the batteries in your remote. You can either check the current batteries in a different device, or buy new batteries to see if this solves the problem.

Re-Pair the Remote

Sometimes the remote may just need to be paired again to your TV. To re-pair the remote, follow the steps below.

Step 1: Restart your TV by unplugging it for 5 seconds.

Step 2: Once your TV is plugged in again, turn it on and wait for the home screen to load.

Step 3: Restart your remote by removing and then reinserting the batteries.

Step 4: Press and hold the ‘Pair’ button for 5 seconds to re-pair the remote (small button in the battery compartment).

When you have completed these steps, wait approximately 30 seconds for the remote to establish a connection with the TV. You should then see a message on the TV confirming the remote has paired successfully.

Sharp TV Roku Black Screen/No Picture

Man with broken TV

The blank screen issue with the Roku interface is a known bug in the Roku firmware. Make sure you report this to the Roku support team, but you will need to wait for a new update to install the fix. For this reason, you should always keep your Roku TV up to date.

Check Roku for System Update
Check Roku for any system updates

If your firmware is up to date and you are struggling with this issue, some users have found performing a hard reset or factory reset on the TV fixes the issue. This may only be a temporary fix, but could be enough to get you through until new firmware is available.

Sharp TV Roku Sound/Volume Not Working

Frustrated woman holding remote

When you have no sound on your Sharp Roku TV, you should always start by checking the volume is not too low on your TV speakers or external speakers, and that they are not muted. You should also make sure that the audio is set to ‘TV Speakers’ if you don’t have any external speaker connected. This setting can be found under ‘Audio Settings’ in the main menu.

Roku Audio Settings

If you have the correct speakers selected and your volume settings are fine, there are a number of other audio settings to check, which I have listed below. Turning these settings off (or to ‘Fixed’) will set your sound to the most basic settings.

· Auto Volume: Off

· 3D Surround: Off

· Balance: Off

· Output select: Fixed

Copyright protected content owner: and was initially posted on August 7, 2021.

Sharp TV Roku Keeps Dimming

Businessman watching TV

Sharp Roku TVs have a dimming feature, known as ‘Local Dimming’ or ‘Local Contrast’ that will dim or brighten pixels automatically to optimise your video. This sometimes produces a visible and sometimes annoying dimming while watching TV. You can disable this feature by pressing the ‘Options’ (star) button on your remote and then following the pathway below.

Advanced Picture Settings > Local Dimming

Sharp TV Roku Light Blinking

Woman is feeling lazy while watching TV

A blinking light on the front of your Sharp Roku TV normally means that it is trying to connect to the Roku servers. This could mean either your internet connection is poor or that the servers are down. You can find tips for these issues earlier in the article.

One other possibility is that the TV is not receiving enough power to function properly. If this is the case, you should make sure it is plugged directly into the wall instead of a power strip. You could also try using a different wall outlet to ensure it is receiving a normal amount of power.

Sharp TV Roku Not Turning On/Won’t Turn On

Man frustated while watching Tv at night


When the TV won’t turn on, it is likely that it has overheated. You can usually feel the warmth after a TV has overheated. This can be due to any of the following causes.

· Sitting in direct sunlight

· Dirty vents at the back of the TV

· TV is too enclosed (such as in a cabinet)

If you suspect this is the case, you will need to eliminate the source of overheating by moving your TV or cleaning the vents. However, this issue can also be caused by an inadequate power supply or malfunctioning hardware.

Inadequate Power Supply

As I mentioned earlier, having an inadequate power supply can be caused by plugging the TV into a power strip instead of its own supply in the wall. Some wall sockets can also be faulty, so trying different power sockets may restore power to the TV.

Broken Remote Control

Make sure that this issue is not related to the remote control by using the power button on the TV instead. If this button successfully turns the TV on, you know that the remote is the issue. Troubleshooting methods for the remote can be found above, including the following problems.

· Batteries are dead

· Remote needs to be re-paired

Other than these issues, you may need a replacement remote altogether if your current remote does not work at all. You may also just be experiencing a sticky power button. You can dislodge any underlying debris by removing the batteries and pressing the button continuously for at least one minute

Broken Hardware

When nothing else seems like it is working, you may have a broken TV. Sometimes the internal components of the TV will wear down, or they could become damaged by power surges or outages.

To confirm if your hardware is damaged, you should call a certified TV technician. They may even be able to fix the problems while they are there.

Sharp TV Roku Keeps Turning Off

Angry man watching TV

A Roku TV that keeps turning off is usually related to a hardware malfunction. Many internal components have protective mechanisms that prevent overheating and damage. These mechanisms will turn the TV off, regardless of what you are doing.

A hard reset, which is detailed at the beginning of this article, will clear these errors. Therefore, try performing this reset to stop your TV from turning off by itself. If the problem persists, this indicates that there is genuinely a fault in the hardware that needs to be repaired or replaced.

Keep in mind that if an issue like this occurs within the warranty period, your repairs or a replacement TV should not cost you anything. It is important not to try to repair the TV yourself while your TV is still under warranty, otherwise you risk voiding it.

Sharp Roku TV Keeps Turning/Flashing On And Off

Frustrated woman with glitch TV

Issues related to a flashing screen generally occur when using a Roku device that is connected to the TV via a HDMI cable. The flashing is caused by a disrupted video signal, which could relate to a number of settings on your TV.

Copyright article owner is for this article. This post was first published on August 7, 2021.

Check your HDMI Connection

You might like to start by checking your HDMI cable, as this is a very common issue that causes the screen to flash. If the connection is loose, you should unplug and reconnect the cable at both ends.

You should also check if the cable is faulty. Try a different cable or try using your current cable with a different device. The cable will not work with other devices either if it is faulty.

Keep in mind that HDMI cables can be different, depending on what they are used for. Most streaming services offer 4K/Ultra HD content that requires fast transmission of the video signal. Unless your HDMI cable was advertised as ‘4K’ or ‘8K’, it may not be fast enough to transfer the video.

When the video transfer is too slow, the TV will replace the missing frames with a blank screen to keep the stream going. Using higher quality HDMI cables will prevent this issue occurring. You should also have the cable plugged into the best HDMI port in the TV, which should be labelled in the user manual.

Picture Mode

Something as simple as your video settings may also be causing the trouble. Try using the most basic settings available on your Sharp TV. Some users have fixed this issue by changing ‘Picture Mode’ from ‘Dynamic’ to ‘Standard’.

Screen Resolution

Another TV setting that you could change is the resolution of the display. This can be changed on both the TV and a Roku device, but must be matching. Standard resolutions are 720p and 1080p.

For a Sharp TV, this setting can be found through the pathway below. You should try using a number of different settings to determine which one might be causing the issue.

Menu > Settings > System Options > Select Screen Aspect Ratio and High Definition

On your Roku device, you can find these settings through the pathway below. You can either select ‘Auto Detect’, or choose a manual resolution. Either way it should match your TV settings.

Home > Settings > Display Type

Hardware Malfunction

For a Sharp smart TV with a Roku interface, a flashing screen is more likely to do with the hardware, considering there is no external Roku device connected to the TV. The most likely components to be broken are the screen or main board. As I mentioned earlier, these should be assessed by a TV technician and you should always consider when your warranty period ends.

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ReadyToDIY is the owner of this article. This post was published on August 7, 2021.

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