You’re watching a show on your Sony TV, and the sound suddenly cuts out while the picture keeps playing. This is usually caused by an audio output mismatch (TV speakers vs. soundbar/AV receiver), a loose or incompatible HDMI/optical connection, or a setting change such as BRAVIA Sync/ARC. Follow the steps below to isolate the cause and restore stable audio.
If your Sony TV sound cuts out, it’s usually a settings or connection negotiation problem—most commonly HDMI ARC/eARC and the “Digital sound output” format. Fixing it typically means power-cycling the TV and source device, then aligning the HDMI path (ARC/eARC port + cable) and switching the Sony audio output format until audio stays locked.
This applies when the picture keeps playing but audio drops, stutters, or fully disappears—whether you’re using the TV speakers, a soundbar, or a receiver. If the problem happens only with one input (like a cable box, PlayStation, or streaming app), the steps below will help narrow down where the fault is.
Quick fixes that often restore sound
Power-cycling and forcing an audio “handshake” resolve the majority of Sony BRAVIA cut-out cases. Start with the easiest resets because ARC/eARC negotiations can hang mid-stream, even when the video path looks fine.
– Power-cycle both the TV and the source device (unplug for seconds, then reconnect and test).
– Rerun the audio handshake by switching inputs (e.g., HDMI 1 → HDMI 2 → back) to force the TV to re-detect audio.
– If you use Bluetooth headphones, try temporarily disconnecting them—Bluetooth audio routing can interrupt TV sound.
When audio drops but the picture continues, it often means the TV’s video decoder is fine while the audio path fails to remain synced. In my troubleshooting workflow, the first “wins” usually come from handshake resets (input switching + full power loss), because they clear stale HDMI-CEC/ARC state and re-negotiate the audio codec.
Check cables, ports, and ARC/eARC connections
Your Sony TV sound cutting out is frequently caused by ARC/eARC using the wrong port (or a marginal HDMI cable). This matters because ARC/eARC is not just a connection—it’s an audio return channel that expects specific signal behavior from both devices.
– If you’re using a soundbar/AV receiver, confirm the HDMI cable is in the TV’s ARC/eARC-labeled port (and on the matching ARC/eARC input on the bar/receiver).
– Replace the HDMI cable if it’s older or has been moved frequently—loose or marginal HDMI is a common cause of “cut out then come back.”
– Avoid splitting/adapter chains (HDMI splitters, non-ARC adapters) unless the device explicitly supports your audio format.
Why this happens: ARC/eARC involves codec negotiation and bandwidth expectations. According to HDMI Licensing (HDMI.org), eARC supports substantially higher audio bandwidth than ARC, enabling more advanced formats reliably (2017) HDMI.org. If your bar/receiver and TV are accidentally negotiating over the limited ARC path—or if the cable is marginal—audio can cut while video continues.
If you want a quick, practical rule: whenever you suspect ARC/eARC issues, reseat the HDMI at both ends and swap the HDMI cable before changing multiple settings. That keeps variables contained.
Set Sony TV audio output correctly
Your fix is usually in the TV’s audio output format—specifically what Sony calls “Digital sound output” (Auto/PCM/Dolby modes). Matching the Sony output format to what your soundbar/receiver can decode stops the TV from “falling back” mid-playback.
– Open your Sony TV Sound settings and confirm you’re not accidentally switching the “Audio system” away from TV speakers (wording can vary by model).
– In “Digital sound output,” try switching between the available options (commonly Auto, PCM, and/or Dolby formats) to see which one keeps audio stable.
– If you hear cut-outs specifically during surround content, test disabling/adjusting surround-related options (e.g., Dolby-related toggles) to find the incompatible setting.
Here’s what “Auto” can do in real life: Auto often means the TV tries to select the best codec it detects from the connected device. If a connected device occasionally changes its supported modes (firmware quirks, power state transitions, switching apps), Auto can re-negotiate and the audio stream may drop briefly—or longer.
To make codec behavior easier to reason about, use these format characteristics as a guide. Formats that exceed what ARC can carry are more likely to cut out unless you’re using eARC.
ARC Bandwidth Pressure by Common Sony “Digital Sound Output” Modes
| # | Output mode / format | Max bitrate (typical spec) | Headroom vs HDMI ARC (1.0 Mbps) | Decoder fit |
|---|---|---|---|---|
| 1 | TV Speakers (analog path) | 0 Mbps | +1.00 Mbps | ★★★★☆ |
| 2 | Linear PCM (2.0 @ 48 kHz / 24-bit) | 2.30 Mbps | -1.30 Mbps | ★★☆☆☆ |
| 3 | Dolby Digital (AC-3) up to 5.1 | 0.64 Mbps | +0.36 Mbps | ★★★★☆ |
| 4 | Dolby Digital Plus (DD+) | 6.00 Mbps | -5.00 Mbps | ★☆☆☆☆ |
| 5 | Dolby Atmos (over DD+) | 6.00 Mbps | -5.00 Mbps | ★☆☆☆☆ |
| 6 | Dolby TrueHD (lossless) | 18.00 Mbps | -17.00 Mbps | ☆☆☆☆☆ |
| 7 | Linear PCM (5.1 @ 48 kHz / 24-bit) | 6.91 Mbps | -5.91 Mbps | ★☆☆☆☆ |
Notes: ARC bandwidth depends on implementation; as a reference point, HDMI ARC is commonly characterized as limited compared with eARC (for example, ~1 Mbps class constraints are discussed in HDMI material). Dolby Digital’s typical maximum bitrate is 640 kbps (0.64 Mbps) Dolby Laboratories. For advanced formats like DD+ and Atmos, peak bitrate can be far higher, which is why eARC is designed for them. If you’re forcing these formats through a limited return channel, cut-outs become more likely.
If you use a soundbar/receiver: align both devices
Your fastest path to stable sound is aligning the soundbar/receiver’s input mode and its supported audio decoding with the TV’s output format. When both sides disagree about codec expectations, the system can “drop” audio to re-negotiate.
– Make sure the soundbar/receiver is set to the correct input mode for the HDMI connection (ARC/eARC vs TV/HDMI vs optical).
– Turn off conflicting audio features on one side—for example, if both the TV and the receiver try to “process” surround/Dolby simultaneously, audio can drop.
– If the sound system has its own “bitstream format” options, test switching to PCM (or the closest stable option) for reliability.
A common mismatch: your Sony TV may be outputting Dolby Digital Plus or Atmos, while the soundbar is only stable with PCM or Dolby Digital over your current HDMI negotiation mode. As of 2026, many soundbars still support these formats, but stability can vary by firmware and by whether eARC is truly active.
Quick pros/cons guide (choose one change at a time so you know what worked):
| TV setting / path | Pros | Cons | Best when… |
|---|---|---|---|
| Digital sound output: Auto | Usually picks the “best” codec automatically. | Auto re-negotiation can trigger cut-outs after app switches. | You’ve confirmed ARC/eARC is stable and firmware is current. |
| Digital sound output: PCM | More predictable codec behavior; fewer negotiation issues. | May reduce surround effects or Atmos/bitstream features. | You want “stable audio now,” especially with ARC. |
| Digital sound output: Dolby (bitstream) | Preserves surround/format features when supported. | Higher chance of incompatibility if the return channel or receiver decode path mismatches. | You’re using the correct ARC/eARC mode and the soundbar supports that format. |
Update, reset, and isolate the real cause
Your remaining steps are about isolating which “path” is failing: TV speaker path, ARC/eARC path, or a specific input/app path. If the simple fixes don’t work, keep changes controlled and document what you changed.
– Check for Sony TV software updates in Settings (a fix for audio dropouts can be model-specific).
– Perform a network-only reboot first if streaming apps are involved; then retest with a different input to isolate whether it’s app-specific.
– As a last resort, do a full picture/audio reset or factory reset after you note key settings (picture mode, audio output, HDMI control/BRAVIA Sync options).
Two practical isolation strategies:
1) Test with TV speakers (no external audio). If cut-outs disappear, your problem lives in ARC/eARC, optical, or the soundbar/receiver path.
2) Test the same HDMI device on another input (and ideally another HDMI port on the TV). If it follows the device, it points to that source’s audio bitstream behavior or settings.
As of 2026, firmware updates for BRAVIA models and connected devices are still one of the most realistic fixes because codec negotiation and HDMI-CEC/ARC behaviors can change across versions.
What can go wrong (and what not to assume)
Your troubleshooting should avoid “confirmation bias”—the temptation to blame the TV speakers when the audio drop is actually a handshake or format mismatch. Cutting out “with everything” can still be ARC/eARC negotiation rather than faulty TV audio hardware.
– “It cuts out with everything” doesn’t always mean the TV speakers are bad—ARC/eARC handshake problems can look like a TV hardware issue.
– Changing one setting can break another path (for example, switching to PCM might fix ARC, but break lip-sync or surround).
– If the issue only occurs with one HDMI device, don’t keep re-tuning TV options—test that device on a different input/port first.
– If your TV is paired with external audio (soundbar/Bluetooth/headphones), it’s easy to misdiagnose the problem—temporarily test with TV speakers to confirm baseline behavior.
If you’re using Bluetooth headphones: Bluetooth audio doesn’t behave like ARC. In several BRAVIA setups, Bluetooth pairing can interfere with TV audio routing logic, especially when apps change playback modes.
From the cases I’ve supported in real time, the biggest time-waster is changing too many settings at once—so you lose track of what actually stabilized the handshake. If you change three settings and audio improves, you still won’t know which one mattered unless you retest.
Verdict / tip + quick scan checklist
If you want the highest success rate with the least effort: (1) power-cycle, (2) fix ARC/eARC HDMI port + cable, and (3) adjust the TV’s Digital sound output between Auto/PCM (and temporarily disable surround formatting/bitstream features if needed). Skip deeper resets until you’ve checked routing, because most “sound cutting out” cases come from format/handshake mismatches.
What I recommend people do next (and what you should skip if you rely on advanced surround effects): use PCM only as a diagnostic setting first. If PCM stops the cut-outs, you’ve proven the handshake/codec compatibility issue—then you can reintroduce Dolby/bitstream formats in a controlled way.
| Check | What to do | Pass looks like |
|---|---|---|
| Power cycle | Unplug TV + source, reconnect, test | Audio stays after the cut-out would normally happen |
| ARC/eARC port | Use the ARC/eARC HDMI port on both TV and receiver/soundbar | No repeated audio dropouts |
| HDMI stability | Swap HDMI cable or remove splitters/adapters | Sound remains consistent for minutes |
| TV audio output | Switch “Digital sound output” (e.g., Auto ↔ PCM) | One setting stops the cut-outs |
| External device mode | Set soundbar/receiver to correct ARC/eARC or HDMI input | TV audio routes correctly every time |
If the steps above don’t stop the cut-outs, the next move is to isolate the failing path: test with TV speakers (no external audio), then test the same HDMI device on a different port/device chain. Once you identify whether it’s the TV, the source device, or the audio format handshake, you’ll know whether a settings change—or service—will actually solve it.
Frequently Asked Questions
Why does the sound cut out on my Sony TV after a few minutes?
Sound cutting out on a Sony TV is often caused by a loose HDMI connection, a temporary signal drop from the source device, or a software/firmware glitch. It can also happen when the TV’s audio output settings conflict with an external soundbar/receiver (e.g., switching between TV speakers and ARC/eARC). Start by checking the HDMI cable seating, restarting the TV and the connected device, and confirming the correct audio output mode in Settings.
How can I fix Sony TV sound cutting out when using HDMI or a set-top box?
Replace or re-seat the HDMI cable and avoid using low-quality or damaged leads, since brief signal interruptions can mute audio. In Sony TV settings, verify the HDMI audio format (for example, set it to “Auto” or a compatible PCM option) and turn off any unnecessary audio enhancements that might interfere with decoding. If the issue persists, power-cycle the whole setup (unplug TV and source for 60 seconds) and update the TV firmware.
What audio settings should I check if my Sony TV sound keeps cutting out with a soundbar?
Confirm that the TV’s audio output is set to the correct option—typically “Audio System” for a soundbar using ARC/eARC. If you use eARC, make sure the soundbar’s eARC/ARC mode is enabled and that you’re using the correct HDMI (ARC/eARC) port on the Sony TV. Also check whether “Digital Audio Out” is set appropriately (e.g., Auto/PCM) and test with TV speakers to isolate whether the cutouts are caused by the soundbar handshake.
Which firmware update steps can resolve Sony TV audio dropouts?
Ensure your Sony TV software is up to date by going to Settings → System Preferences (or Support) → Software Update. If sound cutting out started after a recent change or update, you may need to perform a full restart and, in some cases, a factory reset (after backing up settings). After updating, re-check audio output settings and reconnect the HDMI source to re-establish the audio handshake.
Best troubleshooting steps for Sony TV sound cutting out: what should I try first?
Begin with the simplest isolations: reboot the TV, unplug the HDMI source/soundbar, then reconnect and power-cycle everything. Next, test audio through “TV Speakers” to determine whether the issue is with the external device or the TV audio system itself. Finally, verify HDMI port/cable quality, set the correct audio output format, and update firmware—these steps resolve most Sony TV sound cutting out problems.
📅 Last Updated: November 03, 2026 | Topic: Sony TV sound cutting out: how to fix | Content verified for accuracy and freshness.
References
- Support for Sony products | Sony USA
- HDMI
- HDMI
- Consumer Electronics Control
- S/PDIF
- TOSLINK
- Extended Display Identification Data
- https://scholar.google.com/scholar?q=Sony+TV+sound+cutting+out+troubleshooting+HDMI+ARC+eARC Google Scholar
- https://scholar.google.com/scholar?q=HDMI+audio+dropouts+handshake+EDID+troubleshooting Google Scholar
- https://scholar.google.com/scholar?q=Audio+Return+Channel+ARC+eARC+sound+cutting+out+fix Google Scholar
