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LG 40UB800T-TB - User Manual

LG 40UB800T-TB
50 pages
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*MFL68140541*
UB80**
UB82**
UB83**
Please read this manual carefully before operating
your set and retain it for future reference.
P/NO : MFL68140541 (1407-REV00)
Printed in Korea
www.lg.com
OWNER’S MANUAL
LED TV
*
* LG LED TVs are LCD TVs with LED backlighting.

Questions and Answers

  • M
    Michele HarringtonAug 7, 2025
    How to fix LG 40UB800T-TB LED TV remote not working?
    • D
      Donald ParksAug 7, 2025
      If your LG LED TV isn't responding to the remote, first, ensure there's nothing blocking the path between the remote and the TV's sensor. Then, check the batteries in the remote to make sure they're working and properly installed.
  • D
    David WallaceAug 14, 2025
    Why does my LG 40UB800T-TB turn off by itself?
    • V
      Valerie LeonAug 14, 2025
      If your LG LED TV suddenly turns off, check your power control settings, as the power supply might be interrupted. Also, verify if the Sleep Timer or Off Time is activated in the TIME settings. If the TV is on but not receiving a signal, it will automatically turn off after 15 minutes of inactivity.
  • S
    Shaun FreemanAug 21, 2025
    Why is there no picture or sound on my LG 40UB800T-TB LED TV?
    • K
      Kristen GonzalezAug 21, 2025
      If your LG LED TV has no image and no sound, first, check to ensure that the TV is turned on. Next, verify that the power cord is securely connected to a working wall outlet. You can test the outlet by plugging in another device to see if it works.
  • J
    James FreyAug 29, 2025
    What to do if LG 40UB800T-TB LED TV says no signal from PC?
    • M
      Mary ColemanAug 29, 2025
      If your LG LED TV shows ‘No signal’ or ‘Invalid Format’ when connected to a PC via HDMI / DVI, try turning the TV off and then on again using the remote control. If that doesn't work, try reconnecting the HDMI cable. As a final step, restart your PC while the TV is powered on.

Summary

Licenses

Open Source Software Notice

External Control Device Setup

Safety Instructions

Installation Procedure

Assembling and Preparing

Unpacking

Instructions for unpacking the TV and checking accessories.

How to Use the Ferrite Core

Separate Purchase

Parts and Buttons

Using the Joystick Button

Lifting and Moving the TV

Setting up the TV

Attaching the Stand

Detailed steps for attaching the TV stand to the unit.

Mounting on a Table

Mounting on a Wall

Separate Purchase (Wall Mounting Bracket)

Making Connections

Tidying Cables

Methods for organizing and managing TV cables for a neat setup.

Antenna Connection

HDMI Connection

DVI to HDMI Connection

Component Connection

Composite Connection

Audio Connection

Digital Optical Audio Connection

Headphone Connection

USB Connection

MHL Connection

Remote Control

Magic Remote Functions

Using the User Guide

Maintenance

Cleaning Your TV

Guidelines for cleaning and maintaining the TV for optimal performance.

Troubleshooting

Specifications

Key Codes

External Control Device Setup

USB to Serial Converter with USB Cable

Connecting a PC to the TV using a USB to Serial converter.

RS-232 C With RS232 C Cable

Connecting a PC to the TV via RS-232C cable.

Phone Jack Type

Customer Computer

RS-232 C Configurations

Set ID

Communication Parameters

Command Reference List

Transmission; Receiving Protocol

LG 40UB800T-TB Specifications

General IconGeneral
BrandLG
Model40UB800T-TB
CategoryLED TV
LanguageEnglish

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