Intermittent High-Pitched Noise When HDMI Is Connected to Bluesound NODE

Answered

Sergey Matkovsky

• July 26, 2026 08:02

Hello,

My setup consists of a TV, a Bluesound NODE, and a pair of powered speakers.

The issue I'm experiencing is an intermittent high-pitched "Tzzzz" noise. It doesn't happen continuously—it may last for few second, disappear for a minute, and then return. It's a background noise.

This occurs even when I'm streaming music directly from the NODE. The HDMI cable is connected between the NODE and the TV, but the audio is not being played over HDMI (TV is OFF). As soon as I unplug the HDMI cable, the noise disappears completely.

All of the devices are plugged into the same power outlet through a power strip. The TV has a 3-prong grounded power plug, while the NODE and the powered speakers have 2-prong plugs.

Has anyone experienced a similar issue or have any suggestions on how to fix that?

0

• Official comment

  

  Mark T.

  Sr. Support Crew Member

  • July 27, 2026 13:18
  • Edited

  Hi Sergey,
  
  

  Please review the following support article to see if it helps resolve the issue:
  
  Resolving Ground Loop Noise Issues with the NODE ICON and XLR Connections.

  If the issue persists after following the recommendations in the article, please don't hesitate to submit a support request through the BluOS app or reach out to our Support Crew for further assistance.

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