Article ID : 00138461 / Last Modified : 07/17/2018

The LED Indicator of the Subwoofer Flashes in Colors

Applicable Products and Categories of This Article

IMPORTANT: This article applies only to specific products and/or operating systems. Check the Applicable Products and Categories section of this article before starting these steps.

The table below shows what the colors of the flashing LED (On/Standby indicator) of the subwoofer mean.

Type of FlashesGreenOrangeRed


  • Power is on.
  • The SECURE LINK connection is active.
  • Power is on.
  • The SECURE LINK connection is active.
  • Power is off.
  • The subwoofer is in standby mode.


Not applicable

Not applicable

Indicates rise in temperature of the subwoofer. Follow the steps below to resolve this:

  1. Turn off the subwoofer and make sure that nothing is blocking the vent.
  2. Unplug the power cord from the wall outlet.
  3. Wait for a few minutes until the temperature has cooled.
  4. After the temperature has cooled, plug the power cord back in.
  5. Turn on the subwoofer.

Flashes slowly

The SECURE LINK connection is in standby even when there's no signal. The SECURE LINK connection is in standby even when there's no signal.

Not applicable

Flashes quickly

For HT-ST9, HT-NT3 and HT-RT5, the unit may need repair. Go to Product Repair.

Not applicable

Not applicable

Periodically flashes quickly

Not applicable

The SECURE LINK connection is in progress, wait until it's established.

Not applicable

Wireless Connection Issues

Follow these instructions if you encounter an issue with the wireless connection:

  • Move the subwoofer closer to the main unit of the home theater.
  • If possible, place the subwoofer where it isn't directly blocked by any furniture, walls, or metal barriers.
  • Move your wireless router more than one meter (3 feet) away from the main unit, subwoofer, or sound speaker
  • If the wireless router can switch between 2.4 GHz and 5 GHz frequency bands, try the other frequency.
    • For the HT-ST9, HT-ST5, HT-NT3, HT-RT5: Try switching the wireless router to the 2.4 GHz band
    • For the HT-CT780, HT-CT380, HT-NT5, HT-CT790, HT-CT390, HT-XF9000, HT-X9000F: Switch the wireless router to the 5 GHz band.
  • If the wireless router has multiple channels, set it to a different channel. If the connection issue is resolved, save the setting for that channel.
    • Check the router manual for details on how to change the chanel.
    • If the instructions aren't clear, restart the router. It may automatically select another channel when it turns back on.