Before touching any TV menu, check whether the TV's own speakers still work for live TV input, another app, or even the TV's basic system sounds when you navigate its menus. If they do, the fault is specific to your IPTV app, and that points at an in-app mute setting or a format mismatch tied to that app's particular stream rather than the TV as a whole. If the TV is silent everywhere you check, including its own menu sounds, the problem is broader than any single app, and it probably sits with a connected soundbar or a failed audio handshake instead of the app you're troubleshooting.

This is one of the most common smart TV sound patterns reported. A soundbar or receiver connects over HDMI-ARC or eARC, and the two devices negotiate an audio format handshake every single time either one restarts or wakes from standby. If that handshake fails for the exact format your IPTV app happens to be sending, the soundbar goes completely silent while the TV's own built-in speakers, running on a separate audio path, keep working just fine the whole time. Power-cycling both the TV and the soundbar together usually forces a fresh handshake attempt and restores sound within a minute.

Smart TV firmware updates commonly reset per-app settings behind the scenes, including stored volume levels and mute state, even when nothing else about your setup or your account has changed at all. If your IPTV app opens muted every single time right after an update installed, the update most likely reset the app's own audio setting rather than breaking anything technical underneath it. Check the app's in-app mute control specifically after any update, since the TV's system volume can look completely normal on the surface while the app itself stays muted internally.

If sound is missing everywhere and closing the app entirely doesn't help at all, check the TV's audio output setting next. Many smart TVs default to passing a surround format straight through instead of converting it locally, and if the connected speaker or soundbar doesn't decode that exact format, the audio drops out completely instead of falling back to plain stereo automatically. Switching the setting from passthrough or bitstream to PCM or stereo lets the TV handle the conversion itself before sending audio onward, which resolves this in most cases without needing anything else changed.

Confirm the fault isn't provider-side before assuming your TV itself is the problem: some playback issues trace back to server capacity on the provider's end, not local settings, and no TV menu you adjust will ever fix that kind of fault. It's uncommon for audio specifically, but if it's happening on every device and every app tied to the same account at once, it's worth asking what uptime the service actually guarantees. IP4KTV publishes 99.99% uptime, about 53 minutes of downtime a year, and backs plans with a 7-day money-back window.