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HT503TH
  • TV & Home Entertainment
  • Home Cinema Systems
  • HT503TH

HT503TH

Warranty Information Labour 12 Months / Parts 12 Months More
If you need Repair Service, submit an online service request. Request a Repair

Manuals & Documents

For the most accurate technical information regarding features, specifications, installation and operation of your LG product, please refer to the Owner's Manual and other documents available for this product.

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  • Owner’s Manual

    The Owner’s Manual offers pertinent product information.

Software & Firmware

  • SOFTWARE UPDATE

    Software upgrades include device drivers and firmware updates only for specific models. Check your owner's manual to determine if your product supports software upgrades.

    Firmware update for HT253/LH-735/HT333/HT503/HT963 (Ver:080718k/Date:2011.07.28) Reference

    Firmware update for HT253/LH-735/HT333/HT503/HT963

    1.Upgrade to newest program

    2. Version : 080718k

    3. How to upgrade firmware 
    1) Rename the filename to download as “BANK30.rom”[Both Upper and Lower case In filename is possible] .
    2) Write the file to Root folder of the blank CD.
    3) Insert the CD to the set. If you do that, download start automatically.
    4) Progress rate of upgrading is displayed, and then open door when download is finished.
    5) Remove the Disc.
    6) Unplug the power cord and plug it back in. and then enter into system information.
    7) Do power off.



Help Library

    • Troubleshooting
    • Home Cinema Systems, Speakers & Sound Systems
    26/05/2015
    After Music Library synchronisation, why isn't my new file displayed immediately?
    • Troubleshooting
    • Home Cinema Systems, Speakers & Sound Systems
    29/05/2015
    Speaker won’t connect to a Wi-Fi network. What should I do?
    • Troubleshooting
    • Home Cinema Systems, Speakers & Sound Systems
    18/03/2015
    Why does the smart audio group setting on my Music flow get cancelled?
    • Troubleshooting
    • Blu-ray & DVD Players, Home Cinema Systems, Speakers & Sound Systems
    29/05/2015
    How do I re-install a speaker when I recently moved or replaced a router?
    • Troubleshooting
    • Blu-ray & DVD Players, Home Cinema Systems, Speakers & Sound Systems
    26/05/2015
    How do the different sound effects/types differ?

Video Tutorials