Roku, as a streaming device, is a banger. Smooth, sleek, and efficient are a few of the adjectives that come to my mind when talking about Roku.
Truth is, I have had many Roku devices, but my favorite is the TCL R635 Roku TV. The crisp picture quality and the booming sound seamlessly aid the Roku while streaming.
But just recently, I have been having audio issues; sudden drops in volume and audio sync issues were the most frequent. A quick restart fixed it but the issues became more frequent.
To find out a solution, I went to several support pages and user forums. As a result, I made this troubleshooting guide on how to fix TCL TV audio issues.
To fix audio issues on TCL Roku TV, check for updates and update the audio settings. Ensure firm input/output connection if you have any sound device connected to the TV. Check the internet connectivity, HDMI connection, and remote control. If none of these work, factory reset the TV.
I have mentioned a few additional troubleshooting tips that can fix TCL sound issues.
1. Check the Internet connectivity on TCL Roku TV
The Internet, the most essential commodity for streaming, has to be always stable. An unstable internet can cause all sorts of problems, and sound issues are one of them.
Sync issues and dropouts are mostly due to straggling internet connections. Make sure you have a stable internet connection.
Check the speed of your network using speed testing software. If there is any instability, try refreshing the connection. Unplug the router/modem and plug it back in after a few seconds.
If you still have wavering sounds and sync issues, try these tips.
Connect to a Wider Bandwidth
The traditional 2.4 GHz band WiFi has certain limitations. It cannot support a high amount of traffic/users simultaneously without compromising latency. High latency will cause buffering, and in due time, syn issues.
A 5 GHz band can support higher traffic without compromising latency, although the effective range may be a bit less.
Try connecting to a 5GHz band on your Roku TV. Follow these steps to change the network.
1. On the Home screen, click and open Settings.
2. Click on Network and select Wireless.
3. Select the 5 GHz band network and proceed to enter the password.
Connect via Ethernet
Another viable option is to connect through an Ethernet connection. A Wired connection doesn't get affected by the interferences and transmission difficulties that trouble a wireless connection.
Make sure you use a good Ethernet cable, preferably the latest CAT cable available in the market.
To connect a wired connection, follow these steps.
1. From the Network tab, click and open Wired.
2. If you have a working Ethernet cable connected to the TV, it will automatically establish the connection.
2. Check for Updates
Another necessity to not overlook is the updates. A rundown firmware can make the system laggy and cause all sorts of bugs and errors to brood in it.
Make sure to update the system routinely if it doesn't automatically do so. To check and update your device, follow these steps.
1. On the Home screen, click and open Settings
2. Scroll down and open the System option.
3. Select System Update.
4. Click on Check Now to manually check for updates and install them.
After completing the update, make sure to restart the system.
3. Power Cycle and Restart the Device
One of the most simple fixes to any problem on your device is to restart it. A more sensible option will be to power cycle the device.
A power cycle will eliminate any incumbent bugs and errors and make the device more efficient, especially if it has been running for a long time.
Simply unplug the TCL Roku TV off the socket and plug it back in after a few seconds(~30 seconds).
Alternatively, you can also reset the device from within the Roku interface. Follow these steps to restart your device.
1. On the Settings tab, click and open System.
2. Select Power, and then click on System Restart.
3. Click on Restart to complete the process.
4. Check the HDMI Connection
If you have a soundbar or an AVR connected to the TV, make sure you have a firm connection. A dangling HDMI connection will cause the sound and video to get distorted and messy.
Check the connection on the backside of the TV. Unplug the cable and plug it back in. Check if it's a snug fit.
If you still have issues with the connection, try changing the HDMI port. Connect to a different port and check if this helped. If it did work, the previous port must be damaged.
If changing the ports was of no use, you may want to take another look at the HDMI cable itself. Check if you are using a compatible HDMI cable.
Almost all current TCL Roku TVs support HDMI 2.0. If you are planning to buy a new cable, make sure it has HDCP 2.2 and ARC connectivity support.
Also, make sure there are no crooks or kinks in the cable when connected to the TV.
5. Check the Remote Control
Another error that may be hidden in blindsight is the remote control. Whether due to a spent battery or from shoddy connectivity, the remote may not work properly.
Try verifying the problem by manually changing the volume using the physical buttons on the TV. You can also change the volume using the Roku app on your phone. If you can change the volume, the remote may have some issues.
Check the batteries on the remote. If they have dried up, replace them.
You can also try and reconnect the remote after unpairing it from the TV. This will help in staving off any communication errors.
To Unpair and reconnect the remote, turn OFF the TV and remove the batteries from the remote. Then turn ON the TV and wait for the Home screen. Reapply the batteries, and then press and hold the pairing button next to the battery compartment.
Wait for the LED to blink and then follow the onscreen prompts to pair the remote with the TV.
6. Tweak the Audio Settings
An ill-configured audio setting can cause the audio to behave uncontrollably. This ill-configuration may happen mostly after an update or after adding a new channel.
If that's the case, you will have to manually revert the settings to default, or in some cases, change to a new one.
To change the audio settings, follow these steps.
1. On the Settings tab, click and open Audio.
2. Here, you will find 3 options- TV speakers, menu volume, and S/PDIF and ARC.
3. Make sure the TV speakers option is enabled to get audio output from the TV speakers. Disable this option if you have an external audio device connected to the TV.
4. The Menu volume option decides the volume level while interacting with the Shield TV. Best to leave it at medium. If you have issues with menu sound volumes, try tweaking the setting.
5. S/PDIF and ARC option decides the type of sound format. By default, it is set to auto. If it has been altered, change it back to Auto. If it was already set to auto, try changing it to PCM-stereo or Dolby D.
If you have an external audio device connected through HDMI or an optical cable, make sure to choose the right audio format pertinent to the audio equipment.
After configuring the settings, restart the TV and then check for issues.
7. Changing Volume Modes While Streaming
Another nifty feature on certain Roku devices is its ability to adapt to the various times of the day by changing the volume modes. You can enable or disable this mode while streaming.
But this setting has been reported to be bugged out and cause audio-related issues frequently. You may want to turn OFF the auto-leveling feature on this setting to make such issues disappear.
To change the setting, follow these steps.
1. While playing content on your Roku TV, press the * button on the remote to bring up the options menu.
2. Select Volume Modes and make sure to set it to OFF.
3. If it is already set to OFF, try changing it to Leveling.
Restart the device and check for further problems.
8. Fix AV Sync Issues
AV sync issues can arise out of various criteria, like the internet connectivity issue I mentioned earlier.
Some Roku-specific features can also cause the TCL Roku TV audio out-of-sync issue.
One such feature is the Auto Refresh rate option. This feature will automatically match the TV's frame rate to that of the content being played. This can, in certain instances, cause AV sync issues.
To turn OFF this feature, follow these steps.
1. In the Settings tab, navigate and select the System option.
2. Click on Advanced System Settings.
3. Select Advanced Display Settings.
4. Turn OFF the "Auto adjust Display Refresh rate" option.
You should also try and set the Sound format to PCM-Stereo by following the steps from Tweak the Audio settings if you have sync issues.
Restart the device and try watching content now.
9. Check if Private Listening is ON on the Roku App
If you had recently used your phone as a remote using the Roku app, check if you had inadvertently switched on private listening.
This can be done by opening the Roku app and checking if the headphone icon on the top of the remote interface is ON.
Make sure it is turned OFF since if it is enabled, it will disable the TV audio. Hence, rendering your streaming audio mute.
Restart the device and check if it was helpful.
10. Factory Reset the TCL Roku TV
Did none of these tips prove to be fruitful to you? You might as well try and factory reset your TV. Factory resetting will revert all your personal preferences and changes to the setting to the factory settings.
It will also remove all the channels you have added to the device.
To Reset your device, follow these steps.
1. In the settings tab, click and open System.
2. Click on Advanced System settings and then Factory Reset.
3. Enter the special code and click OK.
4. Wait for the process to complete. Set up your TV from scratch and check for the problem.
Additionally in some TCL Roku TVs, there is an option to reset the TV audio and video settings. If such an option is available on your device, you should try to do so.
You can find the "Reset TV audio/picture Setting" option within the Factory Reset option from above.
Apart from such time-consuming fixes, you may want to check the basic things like if the mute button is on.
If the issue is with an app, try changing the audio/sound settings on the app. You could also remove the app and install it again to fix the issue.
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