Skip to main content
Answered

TV connects to Amp but no sound

  • January 3, 2026
  • 7 replies
  • 66 views

I’ve got a Samsung smart monitor with an HDMI-Arc port connected to my Amp. I can get the TV connected via the app and I hear the chime, but no TV audio plays through the speakers. Line-In and regular music play fine. 

I’m using a very long 50’ HDMI cable because of my room configuration (been buying from Amazon to test and return if needed). This has been my second attempt with a similar cable. 

I read somewhere that 8K cables don’t send the same signals as lower rez-rated cables. These all have crazy name/ratings like “HDMI 2.1 Cable 50ft White 4K 8K Fiber Optic HDMI Cable [8K@60Hz 4K@120Hz, 48Gbps, Dynamic HDR, HDCP 2.2&2.3, 3D] Compatible with 4090, RX 7900 XTX, Monitor, PS5, Soundbar”. Also read that the length could be the culprit.

Anynet+ (HDMI-CEC) is enabled. The cable says it is directional and I’ve switched both ends but still no change.

Has anyone encountered a similar situation, either connection chime but no audio, or figured out getting proper sound while running a long cable? Thanks. 

Best answer by buzz

I’m also suspicious of the long cable, however, you should try the following.

Disconnect all HDMI cables and power down the TV and AMP for at least two minutes, reboot TV and AMP, wait for them to reboot, then connect the HDMI cable. At this time they will share their details with each other. Before making this connection make sure that the TV’s AnyNet is enabled. Now you can connect other devices to the TV, if any.

The above has solved many issues with TV’s.

7 replies

Airgetlam
  • January 3, 2026

Have you tried with a shorter cable, like the one Sonos provided? Just as a test, to see if it has anything to do with your other cable?

Likely require moving some things around, but might help with troubleshooting. 


buzz
  • Answer
  • January 3, 2026

I’m also suspicious of the long cable, however, you should try the following.

Disconnect all HDMI cables and power down the TV and AMP for at least two minutes, reboot TV and AMP, wait for them to reboot, then connect the HDMI cable. At this time they will share their details with each other. Before making this connection make sure that the TV’s AnyNet is enabled. Now you can connect other devices to the TV, if any.

The above has solved many issues with TV’s.


Stanley_4
  • Lead Maestro
  • January 3, 2026

Is that cable ARC eARC capabile?

Temporarily reposition things to test with a normal (wire) cable.


Airgetlam
  • January 3, 2026

If, and I stress that if, it is HDMI 2.1, it should be. 


Stanley_4
  • Lead Maestro
  • January 3, 2026

I'd agree, but the "fiber optic" and "directional" mentioned above, don't give me a warm fuzzy feeling.


Airgetlam
  • January 3, 2026

Agreed. It does appear some vendors don’t enforce all of the specifications required for HDMI 2.1, and just cherry pick things like speed or bandwidth. 


buzz
  • January 3, 2026

I just came across two alternate possibilities. I have no experience with either.

Lightspeed

OREI