“Plays content stored on a USB device (external HDD, USB memory stick) directly on the TV, easily and conveniently.
To connect a USB device
Connect the USB storage device to the TV's USB IN terminal.
The connected USB storage device can be used immediately.
To remove the USB device
Q.MENU USB Device
Select a USB storage device that you want to remove.
When you see a message that the USB device has been removed, separate the device from the TV.
Once a USB device has been selected for removal, it can no longer be read. Remove the USB storage device and then re-connect it.
Using a USB storage device - warning
If the USB storage device has a built-in auto recognition program or uses its own driver, it may not work.
Some USB storage devices may not work or may work incorrectly.
Use only USB storage devices formatted with the Windows FAT32 or NTFS File System.
For external USB HDDs, it is recommended that you use devices with a rated voltage of less than 5 V and a rated current of less than 500 mA.
It is recommended that you use USB memory sticks of 32 GB or less and USB HDDs of 1 TB or less.
If a USB HDD with power-saving function does not work properly, turn the power off and on. For more information, refer to the user manual of the USB HDD.
Data in the USB storage device can be damaged, so be sure to back up important files to other devices. Data maintenance is the user's responsibility and the manufacturer is not responsible for data loss”."
You don’t say what is wrong with the USB connection in your TV, so here’s a link to the user manual that details how to use the USB port (p.28) and also the remote control (p.23) to access the USB functions etc.
Scroll down to Owner’s manual and click on the language link that suits you.
If your USB device is not being detected, plug in a USB mouse and see if the mouse laser light turns on, indicating that the USB port is supplying power to the device. If not there may be a problem with the port."