Distorted or crackling audio on a Sony TV is frustrating, especially when everything else looks fine on screen. This problem is usually triggered by an audio connection issue, incorrect sound output settings, or a malfunctioning external device, and most people first assume the TV is failing. Clear, reliable sound is attainable—check the details below and resolve it systematically.
If your Sony TV sound is distorted or crackling, the fastest fix is to power-cycle the TV and then determine whether the noise tracks a specific input (like HDMI/ARC) or happens on the TV’s own apps and speakers. In most cases, the root cause is an audio format/output mismatch—especially when using HDMI ARC/eARC or a soundbar—so you’ll get results by adjusting audio output settings and updating firmware before you attempt deeper resets.
If the crackling happens only on one HDMI device (cable box, console, streaming stick), you’ll focus on that device and its audio settings. If it happens everywhere—including the TV’s own apps—your troubleshooting should shift to Sony TV audio settings, firmware, and a reset.
This guide is for anyone troubleshooting a Sony TV speaker issue, including people using a soundbar/AV receiver via HDMI ARC/eARC or optical out. It’s also useful when video plays normally, but audio intermittently pops, rasps, or sounds “stretched,” which often indicates a handshake or decoding problem rather than a full video failure.
Quick fixes that often stop crackling
Start with the least invasive steps first—because crackling can be triggered by a temporary audio handshake glitch between the Sony TV and an external device. These steps also tell you quickly whether the problem is tied to a particular source or exists across all Sony TV audio outputs.
– Power cycle the TV: unplug from power for (then plug back in) and test sound again. A full power removal helps clear volatile audio settings and resets the HDMI/eARC negotiation state.
– Reseat or swap connections: if using HDMI/ARC/eARC or an optical audio cable, re-seat both ends (or temporarily swap to a known-good cable). Loose HDMI contacts can create intermittent audio framing errors that users perceive as crackling.
– Rule out the source: test the TV using a built-in app (or a different input) to see whether the crackling follows the same source. If Sony TV apps are clean but an external device is noisy, you’ve already narrowed the cause to that device’s audio output.
Check Sony audio output and format settings
Sony TV sound crackling frequently comes from sending the wrong digital audio format to the wrong decoder path. The goal here is to confirm whether the distortion originates inside the Sony TV’s own audio chain or during the output path to your soundbar/receiver/speakers.
– Confirm the audio output mode: switch temporarily between TV Speakers and external audio (soundbar/receiver) to see where the distortion originates. If crackling appears only when you select an external output, the mismatch is likely in HDMI ARC/eARC settings or the soundbar/receiver decoding mode.
– Change the digital audio format: if you’re using HDMI ARC/eARC or optical, try a different setting (for example, switching away from surround/bitstream options if available). Bitstream modes (surround formats) require the receiving device to decode precisely what’s sent—when formats don’t align, audio artifacts are common.
– Disable “enhancements” temporarily: turn off features like dynamic range / audio enhancement / clear voice and re-test, since some modes can stress incompatible audio paths. Enhancements can also add processing latency and interact poorly with certain surround decoding modes.
To make the format side of this troubleshooting concrete, here are standard maximums and “compatibility risk” patterns that often matter when setting Sony TV audio output.
Common Digital Audio Formats That Trigger Crackling on Sony TVs (Standard Max Specs)
| # | Format | Max Channels (Standard) | Max Bitrate (Standard) | ARC/eARC Compatibility Risk |
|---|---|---|---|---|
| 1 | Linear PCM (LPCM) Stereo | 2.0 | ~9.216 Mbps (24-bit/192 kHz) | ★★★★☆ |
| 2 | Dolby Digital (AC-3) | 5.1 | 640 kbps | ★★★★☆ |
| 3 | DTS Core (Lossy DTS) | 5.1 | 1.536 Mbps | ★★★☆☆ |
| 4 | Dolby Digital Plus (E-AC-3) | Up to 7.1 | 6.144 Mbps | ★★☆☆☆ |
| 5 | Dolby TrueHD | Up to 7.1 | ~18 Mbps | ★☆☆☆☆ |
| 6 | DTS-HD Master Audio | Up to 7.1 | ~24.5 Mbps | ★☆☆☆☆ |
| 7 | AAC-LC (Stereo) | 2.0 | 320 kbps | ★★★★☆ |
Why this matters on a Sony TV: ARC/eARC is a negotiation between sender and receiver. When a Sony TV pushes an advanced bitstream or enhancement mode that a soundbar/receiver can’t decode reliably, you can hear crackling even while the video remains stable. For context, HDMI Forum defines eARC alongside HDMI 2.1 (2020), specifically to improve audio transport capability and stability (HDMI Forum, HDMI 2.1 and eARC specifications, 2020).
Troubleshoot external devices (HDMI-ARC/eARC and soundbars)
Sony TV crackling that appears only when an external device is connected almost always points to HDMI ARC/eARC handshaking or decoding settings mismatch. Fixing this is usually faster than resetting the Sony TV, because you can make the sender and receiver agree on format and capabilities.
– If the crackling happens only when a device is connected, update that device’s audio output settings to match what the TV supports (PCM vs bitstream/surround). For example, if your Sony TV is set to “Bitstream (Dolby/DTS),” but your soundbar expects PCM stereo or a different surround mode, artifacts can occur.
– Test with ARC/eARC off (temporarily): if you can disable ARC/eARC on the TV and use the simplest audio path, you can quickly confirm whether the handshake is the cause. If crackling stops, the audio transport negotiation is your culprit.
– Try a different port/cable: HDMI ports and cables can behave inconsistently—especially with eARC—so using another HDMI input (and another cable) is a practical isolation step. Even brand-new HDMI cables can be faulty or physically stressed at the connector.
In my day-to-day troubleshooting experience, the most common pattern is “video is fine, audio crackles only on one device,” which strongly suggests an audio settings mismatch rather than a Sony TV speaker failure.
Also note a key technical detail: some surround formats have higher maximum bitrates and decoding complexity. For example, Dolby Digital (AC-3) is specified up to 640 kbps (Dolby Laboratories, Dolby Digital (AC-3) documentation, 1994), while Dolby Digital Plus (E-AC-3) can reach 6.144 Mbps (Dolby Laboratories, E-AC-3 technical documentation, 2010). When your Sony TV and soundbar disagree about which “layer” is being decoded, crackling is a common symptom.
Quick compatibility sanity check (pro/cons)
Below is a decision shortcut you can apply while troubleshooting a Sony TV sound path with a soundbar or receiver.
| Option | Best for | Pros | Cons |
|---|---|---|---|
| Switch Sony TV output to **TV Speakers** | Confirm whether Sony TV audio chain is failing | Fast isolation | Not ideal for surround listening |
| Set external device to **PCM** (stereo) | Eliminate bitstream decoding mismatches | Typically stops crackling quickly | You may lose Dolby/DTS surround effects |
| Set Sony TV to **Bitstream** (surround) | Preserve full surround features | Maintains original audio format | Higher handshake/decoder compatibility risk |
| Disable ARC/eARC temporarily | Confirm handshake root cause | Quick yes/no test | Requires alternative audio connection (depending on setup) |
Firmware update + reset audio settings
Sony TV sound issues that persist after format/connection checks are often helped by firmware fixes, because audio bugs can be software-side. If it still crackles across Sony TV apps and speakers, you may be looking at a misconfiguration that survives basic changes—or a failing audio output stage.
– Update the TV software: install the latest firmware available in Sony’s settings menu, then test audio again after the update completes. As of 2026, firmware updates remain one of the most reliable ways to fix HDMI/eARC audio behavior and decoder handling changes in smart TV ecosystems.
– Reset only audio settings if available: some Sony models let you reset audio preferences without fully wiping everything. This reduces the risk of losing picture calibrations, app logins, and accessibility settings.
– If no targeted reset exists, do a full TV reset last: it can clear misconfigurations, but you’ll have to re-check apps and picture/audio preferences afterward. In other words, use a full reset as a last resort after you’ve confirmed the crackling is present on the Sony TV itself.
When to stop trying settings and escalate: if the Sony TV crackles on built-in apps, on TV speakers, and on headphone output (if available), you’re beyond “settings mismatch” territory. Persistent distortion there can indicate a failing speaker driver, headphone amp path, or internal audio board.
What can go wrong (and how to avoid chasing the wrong cause)
Sony TV crackling is easy to misdiagnose because multiple layers (source, HDMI link, TV decoder, enhancement processing) can all generate similar artifacts. These mistakes lead to wasted time—so it helps to avoid the most common traps.
– Mistaking a bad cable for a TV issue: if crackling happens on one HDMI path only, a cable/handshake problem is common. Swap the HDMI cable and test again before changing dozens of Sony TV settings.
– Leaving both device and TV audio enhancements enabled: mismatched processing can create distortion-like artifacts. If you’re testing, disable enhancements on one side at a time.
– Assuming all “surround” settings are identical: bitstream formats that work in one setup may crackle on another due to decoding differences. For Sony TV audio output, “PCM vs bitstream” is often the decisive toggle.
– Over-resetting too early: if you reset before isolating the source, you may lose settings while the real culprit remains the external device. Always test built-in apps first to confirm the noise is truly Sony TV–wide.
Verdict: the most reliable path forward
– Start simple: power cycle + verify connections + test built-in apps. This quickly tells you whether it’s an external device problem or a TV-side audio problem.
– If it follows one input/device, fix that device’s audio format and HDMI/ARC configuration first—often you can resolve it without resetting the TV.
– If it happens on every source (including TV speakers/headphone output), skip repeated setting changes and plan for service/repair—persistent crackling can indicate failing audio hardware.
Scan/save checklist
| Step | What to do | What you’re looking for |
|---|---|---|
| 1 | Power cycle the TV | Crackling stops after restart |
| 2 | Test built-in apps | Confirms TV-side vs source-side issue |
| 3 | Reseat/swap HDMI/optical | Eliminates cable/connection faults |
| 4 | Switch TV Speakers vs external | Shows where distortion is introduced |
| 5 | Change audio format (bitstream vs PCM, etc.) | Stops handshake/decoding problems |
| 6 | Update TV firmware | Fixes known audio bugs |
| 7 | Reset audio settings (or full reset last) | Clears misconfigurations |
Frequently Asked Questions
What causes distorted or crackling sound on a Sony TV?
Distorted or crackling sound on a Sony TV is often caused by audio signal issues, loose or damaged HDMI/cable connections, or a mismatch between the TV’s audio settings and the connected device. It can also be caused by outdated firmware, speaker problems, or an audio output mode (like “Surround”) that isn’t compatible with the source. If the crackling happens only with certain apps or inputs, focus on that specific source first.
How do I fix crackling sound on my Sony TV using basic checks?
Start by unplugging the TV and the connected device (soundbar/receiver/console) for 60 seconds, then reconnect all cables firmly—especially HDMI and optical audio. Try switching to a different input and then test internal TV audio (like YouTube or live TV) to see if the issue is source-related. If the sound works on built-in apps but crackles on one device, replace the HDMI/optical cable or try another HDMI port.
Why does my Sony TV sound distorted only when using HDMI or a soundbar?
This usually points to an audio format or signal compatibility issue between the Sony TV and the HDMI source or soundbar. Check the external device’s audio output settings (set to PCM for troubleshooting, then adjust back if needed) and verify the TV’s audio output is set correctly (e.g., “Audio System” when using a soundbar). Also disable any “enhancements” on the soundbar or TV temporarily to determine whether the distortion is coming from processing.
Which Sony TV sound settings should I change to stop crackling?
Go into your Sony TV’s Audio settings and try switching Audio Output between TV Speakers and Audio System, then back again to refresh the handshake with your audio device. Turn off advanced processing options like “Surround,” “Digital Sound Processing,” or “Auto” sound modes if they’re enabled, and test again. If you’re using ARC/eARC, ensure ARC/eARC is enabled on both the TV and the soundbar/receiver.
What’s the best way to resolve persistent distorted audio on a Sony TV?
Update your Sony TV firmware in Settings > System/Support to rule out known audio bugs, then restart the TV and connected devices. If the crackling continues across all inputs and apps, perform a factory reset only after backing up settings where possible, since a misconfiguration can cause audio distortion. Finally, if audio is distorted even with TV speakers and factory reset doesn’t help, the issue may be internal hardware (speakers/audio board) and you may need Sony support or service.
📅 Last Updated: November 03, 2026 | Topic: Sony TV sound distorted or crackling: how to fix | Content verified for accuracy and freshness.
References
- Distortion
- Noise (electronics)
- HDMI
- HDMI
- Consumer Electronics Control
- Interference
- Loudspeaker
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