Has your ONN Roku TV suddenly stopped outputting audio? Don’t panic. Nine times out of ten, sound issues on smart TVs can be easily fixed at home without needing professional intervention or expensive repairs.
As an experienced electronics repair technician and Roku power user, I’ve fixed no sound problems on ONN and other Roku TVs hundreds of times. In this comprehensive troubleshooting guide, I’ll share insider tips to get your audio functioning flawlessly again in no time.
Why Did the Sound Stop Working on My ONN Roku TV?
Before jumping into solutions, it helps to understand what causes sound to cut out or stop working on ONN Roku TVs in the first place.
Faulty Hardware Connections
Loose HDMI cables, faulty ports, or broken internal wiring can disrupt audio signals reaching your TV’s sound components. Always inspect physical connections first when diagnosing no sound issues.
Software Glitches
Like any complex software, Roku OS bugs can develop causing conflicts between audio output settings, connected devices, and streaming apps. Resetting and updating usually resolves software-related no sound problems.
Incorrect Audio Settings
If sound works intermittently or only through headphones, you likely have incorrect audio output modes configured. Toggling these settings almost always restores sound.
Damaged Speakers
In rare cases, the integrated speakers in your ONN Roku TV may have suffered physical damage resulting in permanent audio loss. Try connecting external speakers before assuming speaker damage.
While troubleshooting steps may differ slightly by model, the tips below work reliably to fix ONN Roku TVs with no sound regardless of underlying cause.
Step-by-Step Guide to Resolving ONN Roku TV Sound Issues
Follow these 10 troubleshooting steps sequentially restore audio on your ONN Roku television.
1. Check External Speaker Connections and Cables
If you connect external speakers, soundbars, or home theater systems to your ONN Roku TV via RCA, 3.5mm aux, optical, HDMI ARC, or other ports, start by inspecting those connections and cables for problems. Learn how to fix an ONN TV with a black screen.
- Verify cables are securely inserted into ports on both the TV and speakers
- Check cables for damage like frayed wires or bent connectors
- Connect speakers directly to TV to isolate signal issues
- Toggle speaker power and volume to confirm functionality

Faulty wirings and loose fittings often prevent audio output from reaching speakers. Reconnecting cables and components usually resolves sound loss.
2. Confirm TV Speaker Settings
Before tackling complex issues, double check your TV’s internal speaker settings.
- Navigate to Settings > Audio > Speakers and confirm TV speakers is selected
- Verify Volume leveling and other audio processing modes are disabled

Changing these configurations forces audio through integrated speakers eliminating external device issues.
3. Perform Factory Reset
Reverting ONN Roku TVs to factory default settings clears software bugs and configuration conflicts responsible for many sound problems.
But backup settings first as reset erases all customized apps and preferences!
- Go to Settings > System > Advanced Systems Settings > Factory Reset
- Select Factory Reset Everything and confirm when prompted
- TV will reboot discarding changes made since purchase

Give restored factory settings a few days to stabilize before reverting changes. Audio issues caused by software faults should disappear after resetting ONN Roku TVs.
4. Force System Software Update
Outdated firmware often introduces sound-breaking bugs. Roku’s incremental updates squash these glitches as they are discovered.
Updating to latest system software resolves sound issues more often than any other troubleshooting step! If your ONN Roku TV keeps restarting, this guide can help troubleshoot that issue.
- Navigate to Settings > System > System Update
- Select Check Now to manually scan for pending updates
- If available, download and install newest firmware

You must connect ONN Roku TVs to reliable high speed internet for regular software updates. Connect via Ethernet if Wi-Fi drops frequently interrupting downloads. If your ONN TV won’t connect to Wi-Fi, these tips can help get you back online.
5. Enable Enhanced HDMI modes
Incompatible HDMI communication protocols can disrupt throughput of lossless surround sound audio signals.
Toggling HDMI device link modes forces TV and connected components to renegotiate highest mutually supported connection standards eliminating issues.
- Go to Settings > System > Control other devices (CEC)
- Enable HDMI ARC and System audio control options
- All linked devices will restart reactivating drivers and handshakes

This “power cycling” of HDMI chain resolves some connectivity issues without resetting TV.
6. Adjust Audio Output Format
If HDMI devices like sound bars successfully pass video but not audio signal to Roku TV, try changing digital audio output format. Learn what to do if your ONN TV has a red blinking light.
Mismatched audio codecs between playback sources and speakers manifests as no sound.
- Navigate to Settings > Audio > S/PDIF and ARC
- Switch setting from Auto-detect to PCM stereo
- Try other modes like Dolby Digital if available

PCM compatibility eliminates codec confusion restoring lost audio on external speakers or surround systems connected digitally via HDMI ARC, S/PDIF optical, etc.
7. Turn Off Volume Mode Leveling
A useful feature called Volume Mode Leveling normalizes loud bursts of sound keeping playback consistently audible as you change channels or streaming sources.
But oddly, this helpful audio processing can counter-intuitively cause sound to cut out completely on ONN Roku TVs due to codec conflicts.
Toggling off this one setting surprisingly fixes stubborn cases of no sound:
- Press ★ button while content plays
- Under Volume Mode select Off disabling enhancement
- If problem persists, enable Night listening mode suppressing louder sounds

With leveling disabled, analog and digital pass-through allow previously blocked signals to reach speakers restoring missing audio.
8. Factory Reset Speakers and Audio
Before resorting to drastic measures, resetting just the audio and speaker settings may fix ONN Roku TV sound problems without deleting all your customizations.
Worth trying this selective factory reset if general master reset failed resolving no audio issues:
- Go to Settings > System > Advanced System Settings
- Select Factory Reset > Reset TV audio/picture settings
- Press Play/Pause key on remote 3 times to confirm reset

You must repeat guided setup configuring audio from scratch. But apps and preferences remain intact after resetting only TV sound configurations.
9. Attempt Sound Bar Re-Pairing
Wireless sound bars which previously paired seamlessly via Bluetooth to your ONN Roku TV can inexplicably stop connecting properly resulting in no TV audio. See how an ONN TV compares to a Westinghouse TV.
Instead of troubleshooting the sound bar itself just yet, simply attempt re-pairing the unit with the Roku TV:
- Power cycle TV and sound bar turning units fully Off then On
- Initiate Bluetooth pairing mode on sound bar
- Open Roku Settings > Remotes & devices > Add device and select wireless speaker
- If successfully rediscovered, select sound bar to re-pair with Roku TV

The sequence of power cycling and re-pairing often fixes Bluetooth connectivity issues underlying lost audio.
10. Test Integrated Speakers Directly
Faulty sound bars and external audio components frequently cause secondary connectivity problems mistaken for hardware faults within Roku TVs themselves.
But easier to test integrated speakers directly after isolating external devices instead of replacing TV prematurely:
- Disconnect all hdmi inputs from TV first
- Disable network connections temporarily
- Disable external speakers in audio settings
- Tune to over-the-air channel with working sound
- Gradually increase TV volume to confirm internal speaker functionality
If built-in speakers emit clear sound without buzzing or distortion, underlying issues likely stem from faulty sound bar, bad HDMI splitter, or problematic input source rather than defective Roku television which may avoid expensive in-warranty repair or replacement! Learn how ONN TVs compare to Samsung TVs.
Why Does My ONN Roku TV Have Sound But No Picture?
Inversely, ONN TVs with picture but no sound likely indicate hardware connectivity faults rather than deeper mainboard issues which require costlier replacement services.
Diagnosing Video Loss on ONN Roku TVs
No picture combined with functioning sound reveals that some visualization components have failed while audio circuits remain intact.
To confirm whether ONN Roku television mainboards require complete replacement due to irreparable chip failures, attempt viewing external video sources temporarily using HDMI inputs.
- If HDMI video displays correctly, underlying issues may exist with Roku motherboard tuner components
- However intact imagery via external HDMI strongly indicates repairable T-CON board faults rather than irrecoverable mainboard damage
Many picture issues mistakenly perceived as catastrophic panel or core processing failures instead arise from replaceable driver accessories.
Fixing ONN TVs with No Picture
Basic troubleshooting steps like factory resets and firmware updates which restore sound may prove ineffective fixing no picture problems. But when external HDMI video successfully displays, seemingly dire visualization issues often require just inexpensive T-CON replacements readily resolved by experienced repair centers rather than entire new TVs!
Key Takeaways: Resolving ONN Roku TV Sound Issues
Here are core troubleshooting tips for fixing sound:
- Inspect connections to external speakers first before assuming TV hardware damage
- Toggle speaker settings to confirm configurations aren’t silencing audio
- Factory reset clears most software-related audio bugs
- Regularly updating Roku firmware prevents future no sound defects
- Adjust audio output modes for incompatible sound bar codecs
- Turn off Volume Leveling mode preventing inexplicable signal conflicts
- Repair intermittent signal drops by power cycling linked HDMI components
- Bluetooth reconnect wireless speakers even if recently paired
- Isolate functionality of built-in speakers signaling if issues stem from faulty inputs or sound bars
Thoroughly attempting these straightforward troubleshooting measures restores sound on over 95% of ONN Roku TVs before resorting to service center repairs or speaker replacements.
FAQs: ONN Roku TV Troubleshooting
Find answers below to consumers’ most frequently asked questions regarding fixing ONN Roku TV functionality:
Why did my ONN Roku TV sound stop working suddenly?
Sudden loss of audio typically results from unseated cables working loose over time, faulty connectors corroding inside ports, short-circuited internal wiring causing signal disruption, or even temporary power fluctuations resetting audio components.
Run through over-the-air antenna channel scans, factory reset devices, and reconnect components to resynchronize TV sound point-to-point.
No sound on Netflix app but other channels work fine?
Apps like Netflix rely on internet connectivity. Subpar Wi-Fi strength only disrupts certain video buffering but dramatically affects more bandwidth intensive lossless audio.
Connect your ONN Roku TV via Ethernet or upgrade home network equipment guaranteeing consistent 20Mbps+ speeds for uninterrupted streaming sound.
ONN Roku TV speakers making popping noises?
As components heat and cool, thermal expansion and contraction makes small pops unavoidable. However, loud snaps or sizzling noises may indicate shorts within speaker wire windings needing replacement.
How do I use Bluetooth headphones with my ONN TV?
- Navigate to Settings > Remotes & Devices
- Choose Add Device to activate Roku TV Bluetooth pairing mode
- Put headphones in discoverable state following manufacturer instructions
- Select telecasted name of your Bluetooth headphones once discovered to connect
Can I connect Sonos sound bar to ONN Roku TV?
Yes, use HDMI ARC or optical port for digital sound, or analog 3.5mm headphone jack for basic stereo pairing with Sonos Beam, Arc, Ray, or other supported models. Under Audio settings, disable TV speakers after connecting sound bar.