Why Is My Fire TV Stick 4K Max Playing Video Without Sound

Problem Description

No sound is usually caused by the wrong audio output setting or a TV input issue. This guide checks audio settings and HDMI connections to restore sound.

Why This Happens in Real Homes

No sound is usually caused by the wrong audio output setting or a TV input issue. This guide checks audio settings and HDMI connections to restore sound. In day-to-day use, this usually looks like Video plays but no audio; TV volume up; Sound works on other devices.

Most cases trace back to TV audio output set to external; HDMI port handshake issue; Dolby audio unsupported. The fix works best when you go step by step instead of changing multiple settings at once.

A practical order for this issue is: Check TV Volume -> Set Audio Format -> Reconnect HDMI -> Power Cycle. After each step, test the exact behavior that was failing so you can confirm what actually solved it.

Symptoms

• Video plays but no audio
• TV volume up
• Sound works on other devices
• Fire TV remote controls volume
• Audio out set to auto
• Recent TV update

Recognize these? Here's what usually causes it.

Common Causes

• TV audio output set to external
• HDMI port handshake issue
• Dolby audio unsupported
• Mute enabled
• AV receiver misconfigured
• HDMI cable loose

Tools & Requirements

Step-by-Step Solution

1

Check HDMI and Audio Output Settings

Go to Settings > Display & Sounds > Audio on your Fire TV Stick 4K Max. Verify the audio output is set to the correct option: Stereo for TV speakers, Auto for soundbars via HDMI ARC, or Passthrough for AV receivers. If set wrong, audio may be sent in a format your TV or soundbar cannot decode, resulting in silence.

2

Test the HDMI Connection

Unplug the Fire TV Stick 4K Max from the HDMI port and plug it back in firmly. Try a different HDMI port on your TV. If using an HDMI extender cable (included in the box), try connecting the Stick directly to the TV without the extender. A loose HDMI connection can cause video to work but audio to drop.

3

Check Volume and Mute on TV

Press the volume up button on the Fire TV remote. If using CEC (HDMI control), the Fire TV remote should control your TV volume. If volume buttons do nothing, go to Settings > Equipment Control > Manage Equipment and set up your TV brand so the remote can control volume. Also check that your TV is not muted — some TVs mute independently of the Fire TV remote.

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4

Restart the Fire TV Stick

Go to Settings > My Fire TV > Restart, or hold the Select and Play/Pause buttons on the remote simultaneously for 5 seconds to force a restart. Audio codec negotiation between the Stick and your TV/soundbar can get stuck after a firmware update. A restart forces re-negotiation of the audio format.

5

Switch Audio Format to PCM

If you hear no sound with Dolby content, go to Settings > Display & Sounds > Audio > Dolby Digital Output and change it from Dolby Digital Plus to Dolby Digital or PCM. Some older soundbars and TVs cannot decode Dolby Digital Plus. PCM (uncompressed stereo) works with all audio devices and is a good test to confirm the audio hardware path is working.

Quick Solutions

Still having issues? This is usually the deeper cause below.

Need More Help? Amazon Support

Note: The contact information below connects you directly to Amazon's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.

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