I purchased this sound bar yesterday and every hour or 2 it switches functions by itself and i have to keep returning to what f i was on. why is this?

Sounds like it's faulty so you must contact the manufacturer, not something that can be addressed here.

Is it possible to play music from a usb memory stick directly through this soundbar? if it is, what method is used to select the album/track?

Please go to this link for a screen capture of how the MP3 playback order works. It's easier than explaining it in writing https://imgur.com/a/3uM3A

How do I control this from my TV remote?

Sound bar and sub volume also works with a Virgin Media remote. However you have to use your LG sound bar remote to add/decrease the depth of the sub and change functions to USB etc

Anyone know what wall mount to use for this please

I used two clear L shaped brackets that I attached to the wall and placed the sound on these, found them on ebay.

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LG SJ3 Soundbar - Black

Product ID: 49447792

Details

Brand
LG
Speaker maximum output power
300 Watts
Connectivity technology
Bluetooth
Audio output mode
Stereo
Input voltage
120 Volts
Mounting type
Tabletop

📱Bluetooth app control

🔊300W powerful output

🖼️Wall-mountable sleek design

Description

🎶 Elevate your living room vibes—because your TV deserves a sound upgrade!

SEAMLESS TV SOUND SYNC - Eliminate audio lag and clutter for perfectly synchronized sound.
IMMERSIVE 2 1 CHANNEL SOUND - Feel every beat with 300W of rich, room-filling audio power.
EFFORTLESS BLUETOOTH CONTROL - Manage your soundbar from your smartphone with the LG Bluetooth Remote App.
SMART ADAPTIVE SOUND CONTROL - Automatically optimizes audio for your content—never miss a word or note.
SPACE SAVVY WALL MOUNT DESIGN - Elevate your home theater aesthetic with a sleek, easy-to-mount soundbar.

The LG SJ3 Soundbar delivers a powerful 300W 2.1 channel audio experience with a wireless subwoofer, featuring Adaptive Sound Control for intelligent audio optimization. It offers seamless TV sound synchronization and Bluetooth app control for effortless management. Designed in a sleek black finish, it’s wall-mountable to complement modern home setups.

Specifications

Recommended uses for product	For televisions
Compatible devices	Soundbars
Subwoofer diameter	15.24 Centimetres
Surround-sound channel configuration	2.1
Colour	Black
Included components	Wireless Subwoofer Remote Control
Product dimensions	7.1D x 95W x 4.7H centimetres
Item weight	6.7 Kilograms
Impedance	4 Ohm
Is waterproof	False
Warranty type	Limited
Maximum range	10 Metres
Number of items	1
Control method	App
Wireless communication technology	Bluetooth
Speaker size	7.1 Centimetres
Power source	Corded Electric
Manufacturer	LG Electronics
Language	English, English, English, English, English
Item model number	SJ3.DGBRLLK
ASIN	B06XGV33ZY

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