What to do if my LG SPM7A Speaker System has no power?
- AAndrea KingJul 28, 2025
First, make sure the power cord is securely plugged into the outlet. If it is, check whether there is a power outage by testing other electronic devices.
What to do if my LG SPM7A Speaker System has no power?
First, make sure the power cord is securely plugged into the outlet. If it is, check whether there is a power outage by testing other electronic devices.
What to do if my LG Speaker System remote control does not work?
If the remote control isn't working, first ensure you are within 7 meters (23 feet) of the unit. Then, check for any obstacles between the remote and the unit and remove them. Finally, replace the batteries in the remote with new ones.
Why is there no woofer sound from my LG SPM7A Speaker System?
First, ensure that the subwoofer's power cord is securely plugged into the wall outlet. If it is, pairing between the unit and the subwoofer may be disconnected. Please refer to page 18 of the manual to connect the unit and the subwoofer.
Why doesn't the LG Sound Sync work on my LG SPM7A Speaker System?
First, verify that your LG TV supports LG Sound Sync. Next, check the connection of LG Sound Sync (Optical or wireless). Finally, check the sound settings on both your TV and the speaker system.
Why is there no sound coming from my LG SPM7A?
There might be several reasons for the lack of sound. First, ensure that the correct input source is selected. Second, check if the mute function is activated and deactivate it by pressing the Mute button or adjusting the volume. Finally, if you are using an external device like a set-top box or Bluetooth device, adjust the volume level on that device as well.
What to do if my LG Speaker System doesn't work properly?
Try turning off the power to both the unit and any connected external devices (TV, Woofer, DVD-player, Amplifier, etc.), and then turn them back on. If that doesn't work, disconnect the power cord of the unit and connected devices, and then reconnect them. Note that previous settings may not be saved when the device power is shut off.
Why doesn't the AUTO POWER function work on my LG Speaker System?
Check the connection of the external device such as a TV, DVD/Blu-Ray player, or Bluetooth device. Also, check the SIMPLINK settings on your LG TV and turn off SIMPLINK. Depending on the connected device, this function may not operate.
Display type | LCD |
---|---|
Product color | Black |
Built-in display | Yes |
Audio formats supported | AAC, LPCM, MP3, OGG, WAV |
High Dynamic Range (HDR) technology | High Dynamic Range 10 (HDR10) |
Audio decoders | DTS Digital Surround, DTS-HD HR, DTS-HD Master Audio, DTS:X, Dolby Atmos, Dolby Digital, Dolby Digital Plus, Dolby TrueHD |
Equalizer modes | AI Sound Pro, Bass Blast, Bass Blast+, Movie, Music, Standard |
RMS rated power | - W |
Audio output channels | 3.1.2 channels |
Center speaker RMS power | 30 W |
Front speakers RMS power | 60 W |
Audio sample rate (24bit) | 96 kHz |
Soundbar speaker RMS power | 90 W |
Subwoofer type | Active subwoofer |
Subwoofer connectivity | Wireless |
Soundbar power consumption | 38 W |
Power consumption (standby) | 0.5 W |
Subwoofer power consumption | 33 W |
Cables included | Optical |
Number of products included | 1 pc(s) |
Package type | Box |
Package depth | 589.28 mm |
Package width | 982.98 mm |
Package height | 226.06 mm |
Package weight | 11748 g |
Wi-Fi | No |
HDMI in | 1 |
HDCP version | 2.3 |
USB 2.0 ports quantity | USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them. |
Connectivity technology | Wired & Wireless |
Depth | 119.38 mm |
---|---|
Width | 899.16 mm |
Height | 66.04 mm |
Soundbar weight | 3719.46 g |
Subwoofer depth | 292.1 mm |
Subwoofer width | 180.34 mm |
Subwoofer height | 391.16 mm |
Subwoofer weight | 7801.8 g |
Important warnings and precautions regarding the use of the power cord.
Warning about keeping children away from speaker ducts.
Information regarding open source licenses and obtaining source code.
Explanation of symbols used throughout the manual.
Controls for turning the unit on/off and standby mode.
Allows selection of input sources and functions via the 'F' button.
Buttons for increasing or decreasing the speaker volume.
Components for receiving remote signals and displaying status.
Guidelines for using touch-sensitive buttons correctly.
Port for connecting the AC adapter.
Connects to optical audio output from a TV or device.
For connecting USB storage devices.
Connects to HDMI output from external devices.
Connects to TV's ARC input for audio return.
Instructions for replacing the remote control batteries.
Buttons for standby, volume, track selection, and playback.
Feature to limit Bluetooth connection options.
Selects different audio sound effects.
Adjusts individual speaker sound levels.
Buttons for function selection and muting audio.
Shows input source and audio format details.
Controls automatic power on/off based on input signals.
Options for file playback modes and USB folder browsing.
Diagram showing the placement of the center speaker.
Diagram showing the placement of the front speakers.
Diagram showing the placement of the top speakers.
Diagram showing the placement of the subwoofer.
Warnings about wireless connection performance and surface care.
Guidance on sound bar placement relative to the TV sensor.
Warning to connect cables before installing the unit.
Lists the necessary items for wall mounting.
Information on screws and wall plugs for mounting.
Cautions regarding proper installation, impact, and cable safety.
Instructions for bundling cables with ties.
Warning about using only the supplied AC adapter.
Explains the meaning of the subwoofer's LED colors.
Steps for pairing the subwoofer and initial setup.
Notes on connection duration, optimal positioning, and interference.
Steps for connecting the unit via an optical cable to the TV.
Feature for controlling the unit with your TV's remote.
How to establish LG Sound Sync using a wired optical connection.
How to establish LG Sound Sync wirelessly.
Steps to connect the unit to the TV using an HDMI cable.
Enables audio return from TV to the unit via HDMI.
How SIMPLINK controls the unit via HDMI.
Recommendations for selecting appropriate HDMI cables.
Requirements for HDMI connection, including CEC and ARC support.
Explanation of the Dolby Atmos audio experience.
Explanation of the DTS:X audio experience.
Conditions required to enjoy these audio formats.
Steps to connect audio devices to the HDMI IN port.
Steps to connect audio devices to the Optical IN port.
Caution on removing protective plugs and proper alignment.
How to connect a USB memory device to the unit.
Limitations and specifications for connected USB devices.
Lists the types of USB devices supported by the unit.
Lists the sampling frequencies supported for audio files.
Lists the bitrate resolutions supported for audio files.
Notes on file recognition, naming, and playback order.
Instructions for playing music and managing files from a USB device.
How to control the sound bar using your TV's remote.
Automatically powers the unit on/off based on input sources.
Unit automatically switches input functions based on signal.
Reduces boot time by using low power standby mode.
Overview of Bluetooth technology, versions, and available devices.
Supported Bluetooth profiles for ensuring compatibility.
Step-by-step guide to pair and play music from a Bluetooth device.
Troubleshooting tips for connection issues, interference, and limitations.
Control playback, pause, skip, and volume of connected Bluetooth devices.
Restricts Bluetooth connections to specific functions to prevent unauthorized pairing.
Introduction to the features and benefits of the LG Sound Bar app.
Steps to install the LG Sound Bar app using the Google Play Store.
How to use the app to connect and manage Bluetooth devices.
Solutions for common operational problems.
Solutions for no power, no sound, or no woofer sound.
Solutions for remote control malfunctions and auto power function failures.
Solutions for problems with LG Sound Sync functionality.
Solutions for Bluetooth connection failures and low sound output.
Solutions for when the USB device is not recognized.
Causes and solutions for wireless interference issues.
Causes and solutions for Bluetooth device malfunction or noise.
How to exit demo mode and change input sources.
Solutions for when the remote control is unresponsive.
Lists trademarks for Dolby, DTS, Bluetooth, and HDMI technologies.
Details on power, adapter, dimensions, operating conditions, and audio formats.
Specifications for OPTICAL IN, HDMI IN, and HDMI OUT ports.
RMS output power ratings for each speaker channel.
Details power requirements, impedance, and dimensions of the wireless subwoofer.
Instructions for safely packing the unit for transport.
Guidance on cleaning the unit's exterior surfaces.