LG M2450D 用户手册

Picture OK & No sound

 

y Press the 

(

,

) 

button

 

or 

(

)

 button.

 

y Sound muted? Press MUTE button.

 

y Try another channel. The problem may be with the broadcast.

 

y Are the audio cables installed properly?

No output from one of the speakers

 

y Adjust Balance in menu option.

Unusual sound from inside the 

product

 

y A change in ambient humidity or temperature may result in an unusual 

noise when the product is turned on or off and does not indicate a 
problem with the product.

No sound when connecting HDMI

or USB

 

y Check HDMI cable is High Speed HDMI Cable.

 

y Check USB cable over version 2.0.

 

y Use a normal MP3 file

When the user changes the picture 
settings, the 

TV

 automatically 

converts back to the initial settings 

after a certain period of time.

 

y It means that the TV is currently set to Store Demo mode. To switch 

to Home use mode you should do the followings: From the TV Menu, 
choose 

OPTION   Choose Initial Setting   Choose Home use. Now, 

you have completed switching to the 

Home use mode.

PC mode

Power is on, power indictor is blue 

but the screen appears extremely 

dark.

 

y Adjust brightness and contrast again.

Does the ‘Invalid format’ message 

appear?

 

y The signal from the PC (Video card) is out of the vertical or horizontal 

frequency range of the product. Adjust the frequency range by 
referring to the Specifications in this user’s guide.

Does the ‘Check signal cable’ 

message appear?

 

y The signal cable between PC and product is not connected. Check 

the signal cable.

 

y Press the ‘INPUT’ button in the remote control to check the input 

signal.

The power indicator is dimmed.

 

y If the product is in power saving mode, move the mouse or press any 

key. 

No picture when connecting HDMI

 

y Check that your HDMI cable is High Speed HDMI Cable.

If the HDMI cables are not High Speed HDMI Cable, flickering or no

screen display can result. Please use the High Speed HDMI Cable.