LG Electronics 55LN549E, 55LN541C manual Troubleshooting, General, Audio, Video, Problem Solution

Page 24

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24TROUBLESHOOTING

TROUBLESHOOTING

General

Problem

Solution

 

 

 

 

Cannot control the TV with the remote

yyCheck the remote control sensor on the product and try again.

 

control.

yyCheck if there is any obstacle between the product and the remote control.

 

yyCheck if the batteries are still working and properly installed ( to ,

to ).

 

 

 

No image display and no sound is

yyCheck if the product is turned on.

 

produced.

yyCheck if the power cord is connected to a wall outlet.

 

 

yyCheck if there is a problem in the wall outlet by connecting other products.

Image appears slowly when the TV

yyThe image is muted during the product startup process. This is normal. If the image does not

turns on.

appear in a few minutes, unplug the TV for 30 seconds and try again. If the image still does

 

not appear, contact the authorized service center in your local area.

 

 

 

 

Cannot connect external devices.

yyRefer to the Connection Overview and connect an external device.

 

 

 

 

The TV turns off suddenly.

yyCheck the power control settings. The power supply may be interrupted.

 

 

yyCheck if the Auto sleep feature is activated in the Time settings.

 

 

Refer to the Sleep Timer.

 

Audio

Problem

Solution

 

 

No sound is produced while images are

yyPress VOL + or - button.

displaying.

yyCheck if the sound is muted by pressing MUTE.

 

yyScroll to other channels. There may a problem with the broadcast.

 

yyCheck if the TV Speaker feature is activated in the menu option.

No output from one of the speakers

yyAdjust Balance in the menu option.

 

 

Unusual sound from inside the TV is

yyA change in ambient humidity or temperature may result in an unusual noise when the

produced.

product turns on or off. There is no problem with your product.

 

 

Video

Problem

Solution

 

 

An image displays in black and white or

yyAdjust the color setting in the menu option.

the color quality is poor.

yyKeep a sufficient distance between this product and other electronic products.

 

yyScroll to other channels. There may a problem with the broadcast.

Horizontal or vertical bars appears or

yyCheck if there are local interferences such as an electrical appliance or power tool.

images blur

 

 

 

Lines or streaks appear on images

yyCheck the antenna or aim the antenna to the proper direction.

 

 

Afterimages (ghosts) appear when the

yyPixels may have been damaged from a fixed image displayed for a long time (image burn).

product turns off

Use a screen saver to prevent the pixel damage on the screen.

The power is on but the screen appears

yyAdjust the brightness and contrast in the menu option.

extremely dark.

 

No Signal appears on the screen.

yyCheck if the signal cable is connected between the TV and products properly.

 

yyCheck the selected input source by pressing INPUT.

Black spots appear on the screen.

yySeveral pixels in red, green, white, or black may appear on the screen that can attribute to

 

the characteristics of the panel.

 

yyThis is normal.

The display offset is wrong.

yyAdjust the position setting in the Picture menu.

 

yyCheck if the video card resolution and frequency are supported by the product. If the

 

frequency is out of range, set to the recommended resolution using the display settings on

 

the external device.

 

 

Thin lines appear in the background of

yyCheck the video cable connections.

the screen.

 

 

 

The reception on some channels is

yyScroll to other channels. There may a problem with the broadcast.

poor

yyThe station signal may be weak. Aim the antenna to the proper direction.

 

yyCheck if there is local interferences such as an electrical appliance or power tool.

 

 

Image 24
Contents LED TV Important Safety Instructions EnglishEnglish YyDisconnecting the Main Power YyGroundingYyMoving YyVentilationPreventing Image burn or Burn-in on your TV ScreenYyDot Defect For USA and Canada YyGenerated SoundLicenses Open Source Software NoticeTable of Contents Assembling and Preparing UnpackingRemote Control, Batteries AAA Power CordPower Cord Holder and Screw Desk-Mount Screw See pWireless Dongle Optional Extras For LN549E seriesParts and buttons Button DescriptionLifting and moving the TV Setting up the TV Attaching the standAdjusting the angle of the TV to suit view Mounting on a tableInsert and tighten the eye-bolts, or TV brackets Model Vesa a x BStandard screw Number of screws Wall mount bracket Optional ModelFor 32/39/42LN541C, 32/39/42LN549E, For 32/42LP560M For 47/55LN541C, 47/55LN549ERemote Control Number buttonDash Navigation buttons up/down/left/right Control buttonsColor buttons VOL Timer CH a VOLOK/ENTER ꔉ BackExit ꕯ Color buttons Red, Green, Yellow, BlueSpecifications Hdmi DTV supported mode RGB PC, Hdmi PC supported modeTroubleshooting Problem SolutionGeneral AudioFor LN549E series IR Codes Code Function HexaExternal Control Device Setup RS-232C SetupType of connector Sub 9-Pin Male Pin nameRS-232C configurations Wire ConfigurationsNot standardSet ID Communication Parameters HexadecimalError Acknowledgement Transmission / Receiving protocolTransmission OK AcknowledgementPower Command k a Input Select Command x bAspect Ratio Command k c Volume Mute Command k eOSD Select Command k l Remote Control Lock Mode Command k mTreble Command k r To adjust treble Bass Command k s To adjust bassAuto Configuration Command j u Channel Tuning Command m aChannel Add/Del Command m b To add and delete the channels Key Command m cMain/Sub Two/One Using StepPhysical Picture Reserved ChannelChild Safety LG Customer Information Center