LG Electronics RU-42PX10, RU-50PX20, RU-50PX11, RU-42PX11, RU-50PX10 Troubleshooting Checklist

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Troubleshooting Checklist

Troubleshooting Checklist

No picture &

No sound

Picture OK &

No sound

The remote control

doesn’t work

Picture appears slowly

after switching on

No or poor color or poor picture

Horizontal/vertical bars

or picture shaking

No output from one of

the speakers

Unusual sound from

inside the TV

Check whether the TV is turned on.

Is the power cord inserted into wall power outlet?

Test the wall power outlet, plug another product’s power cord into the outlet where the TV’s power cord was plugged in.

Press the VOLUME (G) button.

Sound muted? Press MUTE button.

Check to see if there is any object between the TV and the remote control causing obstruction.

Are batteries installed with correct polarity (+ to +, - to -)? (Refer to p.9)

Correct remote operating mode set: TV, VCR etc.?

Install new batteries. (Refer to p.9)

This is normal, the image is muted during the TV startup process. Please contact your service center, if the picture has not appeared after five minutes.

Select Color in the Picture menu and press the VOLUME (G) button. (Refer to p.20)

Keep a sufficient distance between the TV and the VCR.

Activate any function to restore the brightness of the picture.

(If still picture is on the screen for more than 5 minutes, the screen gets dark.)

Check for local interference such as an electrical appliance or power tool.

Adjust Balance in the Sound menu. (Refer to p.22)

A change in ambient humidity or temperature may result in an unusual noise when the plasma display is turned on or off and does not indicate a fault with the TV.

Owner’s Manual 41

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Contents LG Electronics U.S.A., Inc Plasma TVPower Cord Polarization Cleaning Important safeguards for you and your new productAccessories, Carts, and Stands Power SourcesSafety Instructions Contents How does it work? What is a Plasma Display Panel PDP?Wide angle range of vision Wide ScreenFront Panel Controls ControlsConnection Options Number buttons Remote Control Key FunctionsAttaching the TV assembly to the wall Installation InstructionsAntenna Connection External Equipment ConnectionsCable TV Setup VCR SetupConnection Option Cable BoxHow to connect External A/V Source SetupHow to use DVD SetupMonitor Out Setup DTV SetupDigital Set-top Box Component 1, Component 2, RGB, or DVI sourceResolution Horizontal Vertical PC SetupMonitor Display Specifications RGB / DVI Mode Turning on the TV power cord is still connected Turning on the TV just after installationTurning the TV On Menu Language SelectionChannel Menu Options Fine Tuning AdjustmentAuto Program Channel Search Manual Program Adding/Deleting ChannelsChannel Menu Options Signal Reception BoosterFavorite Channels Setup Auto Color Temperature Control Color Temperature ControlManual Color Temperature Control ACC set to Off option Picture Menu OptionsManual Picture Control APC set to set to Off option Picture Menu OptionsSRGB only RGB-PC, DVI-PC Modes Dasp Digital Auto Sound Processing AVL Auto Volume LevelerSound Menu Options Manual Sound Control Dasp off option and balance Stereo/SAP Broadcasts SetupSound Menu Options Auto Clock Setup Timer Menu OptionsManual Clock Setup On/Off Timer SetupAuto Off Timer Menu OptionsSleep Timer ISM Image Sticking Minimization Method Special Menu OptionsKey Lock XD Demo Low PowerSpecial Menu Options Caption/Text Closed CaptionsCaptions Setting Picture Format Auto AdjustmentScreen Menu Options Screen PositionCinema Mode Setup TV, Video1-2 and Component 480i mode only Manual Configure RGB-PC mode onlySelecting VGA mode RGB-PC mode only Split Zoom Initializing Reset to original factory valueScreen Menu Options Lock Menu Options Parental Lock SetupPIP Picture-In-Picture/Double Window Feature RS-232C Setup External Control Device SetupType of Connector D-Sub 9-Pin Male RS-232C ConfigurationsCommunication Parameters Transmission / Receiving Protocol Command Reference ListSet ID Input Select Command2b Main Picture Input Power Command2aAspect Ratio Command2c Main picture format Screen Mute Command2dTint Command2j Color Command2iSharpness Command2k OSD Select Command2lBalance Command2t Bass Command2sColor Temperature Command2u Red Adjustment Command2vLow Power Command2q ISM Method Command2pAuto Configure Command2u Orbiter Time Setting Command2rIR Codes How to ConnectRemote Control IR Code ARC Code Hexa FunctionTroubleshooting Checklist Cleaning the Cabinet Cleaning the ScreenExtended Absence RU-42PX10/11/20 RU-50PX10/11/20LG ELECTRONICS, INC Plasma TV U.S. Limited Warranty No 3828VA0470A b This Limited Warranty does not Apply to