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LG 55LX770M - User Manual

LG 55LX770M
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www.lg.com
Please read this manual carefully before operating your TV and
retain it for future reference.
Safety and Reference
OWNER’S MANUAL
LED TV*
* LG LED TVs are LCD TVs with LED backlighting.
32LX770M
43LX770M
55LX770M
32LX774M
43LX774M
55LX774M
*MFL68925805*
P/NO : MFL68925805 (1612-REV01)

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Questions and Answers

  • G
    Gregory HallAug 12, 2025
    What to do if my LG 55LX770M turns off suddenly?
    • R
      reyesjohnAug 12, 2025
      If your LG LED TV turns off suddenly, it could be due to a few reasons. First, the power supply might be interrupted, so check the power control settings. Also, the Timer Power Off or Sleep Timer feature might be activated in the TIMERS settings. Finally, if there's no signal while the TV is on, it will turn off automatically after 15 minutes of inactivity.
  • J
    Janice SmithAug 16, 2025
    Why is my LG TV remote not working?
    • J
      Jesus CarpenterAug 16, 2025
      There are several reasons why your LG TV remote might not be working. First, ensure the remote is set to TV Mode using the MODE key. Then, aim the remote directly at the IR receiver on the TV from a closer distance, ensuring nothing is blocking the path. Dim the room light if there's too much light. Check and replace the batteries, making sure they are inserted with the correct polarity (+ and -). If applicable, connect the MPI cable to the MPI device. Finally, verify that the remote IR codes match the settings in your TV; if you're using an Installer Remote, ensure it's compatible and contact your LG representative if needed.
  • K
    Kimberly HarringtonAug 20, 2025
    Why my LG 55LX770M LED TV remote control is not working?
    • K
      kevin59Aug 20, 2025
      If you cannot control your LG LED TV with the remote, there might be a simple fix. First, check if anything, like tape, is covering the receiver. Then, make sure there are no obstacles between the remote and the TV. Finally, try replacing the batteries in the remote with fresh ones.
  • R
    Robert ReedAug 25, 2025
    What to do if my LG TV has no picture?
    • S
      Stephen GomezAug 25, 2025
      If your LG TV has no picture, start by ensuring the TV is turned ON. Check that the antenna or cable is securely connected to the TV. Verify all connections to the TV are correct. If applicable, connect the MPI cable to the MPI device. If you're tuned to an encrypted program, try switching to another channel. Lastly, adjust the Installer Menu settings to ensure the correct tuning band is selected.
  • A
    Andrew SharpAug 27, 2025
    Why does my LG TV have sound problems?
    • B
      Brian LeeAug 27, 2025
      If your LG TV has a normal picture but poor or no sound, first, make sure the audio isn't muted by pressing the MUTE button or using the Volume Up key. If that doesn't work, try changing the channel in case there's a broadcast problem. Also, check that Installer Menu items 020 FEATURE LEVEL and 027 HOSPITAL MODE are set as required. If applicable, select TV Speaker in the Audio Menu.
  • M
    monica99Aug 31, 2025
    How to fix no channels on LG TV after Express Script?
    • A
      anthonybrownAug 31, 2025
      If no channels are present on your LG TV after running the Express Script, it's likely that Auto Tuning was not run. Refer to the Express Script procedure. Auto Tuning must be run in order for the channel lineup to be populated. To reactivate the Express Script, restore the TV to a factory default condition.
  • M
    Mario MyersSep 4, 2025
    What to do if my LG 55LX770M LED TV has no image and sound?
    • L
      Laura JohnsonSep 4, 2025
      If your LG LED TV shows no image and produces no sound, try these steps: Check if the TV is turned on. Verify that the power cord is securely connected to a wall outlet. To ensure the wall outlet is functioning correctly, connect other products to it.
  • J
    Jessica GaySep 8, 2025
    Why can't I enter channel numbers directly on my LG TV?
    • R
      Robert FletcherSep 8, 2025
      If you cannot directly enter a channel number on your LG TV, it could be due to the TV being in Pass-through Mode with Installer Menu item 028 CH. OVERIDE set to 0 (disabled). To fix this, set CH. OVERIDE to 1 to allow direct keypad entry to all channels. Alternatively, if the TV is in FTG Mode, the channel you're trying to enter may not be included in the FTG Channel Map. In this case, make changes to the FTG Channel Map using the FTG File Manager or the FTG Device Configuration Application.

Summary

Important Safety Instructions

Safety and Operation Guidelines

Grounding

Instructions for proper electrical grounding to prevent electric shock.

Cleaning

Guidelines for safely and effectively cleaning the TV.

Moving

Procedures for safely moving the television to prevent damage.

Ventilation

Requirements for proper TV ventilation and placement.

Maintenance and Handling

Cleaning Your TV

Instructions for cleaning the TV screen, frame, and stand.

Lifting and Moving the TV

Guidelines for safely lifting and moving the TV to prevent damage.

TV Installation and Security

Mounting on a Wall

Instructions and precautions for wall-mounting the TV.

Connections and Signal Input

Connecting to an Antenna or Cable

How to connect an antenna or cable box to receive TV signals.

Supported Media and Troubleshooting

Troubleshooting

Common issues and solutions for TV operation.

External Control Device Setup

KEY CODES

Communication Parameters

Transmission; Receiving Protocol

Real data mapping

LG 55LX770M Specifications

General IconGeneral
BrandLG
Model55LX770M
CategoryLED TV
LanguageEnglish

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