Question about LG DU-42LZ30 42 in. LCD HDTV

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Picture but no sound

Lg 42in lcd tv

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Re: picture but no sound

Probably the internal amplifier for the audio output, get ureself an amp with some speakers and forget about the problem

Posted on Dec 09, 2007

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LG 42in Class 1080p 120Hz LCD HDTV red light stays

Your tv set is stuck in the standby mode as a components went shortcircuit in one of the power supply rails and should be serviced by qualified personnel.


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My 42in Vizio LCD has sound but no picture. Screen starts blue when it turns on then goes to black with only sound.

Make sure in the back of the TV the "picture cords" or A/V cables are properly fitted.... Hope this helps :)

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This is a inverter board problem. sometimes you can see the picture with a flashlight 2 in away from screen. try, or

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Lg 3000 42in tv, no picture just blank screen but sound is working

Sounds like a problem with your backlights. Could be the inverter, the CCFL's, the power supply board, or even the main board causing it.
But don't fret, this could be a very good opportunity for family bonding. I like to stand up in front of the TV and act like what should be showing on the screen for my family's viewing pleasure.
Ok, I used to do that anyway. But my family left me for some reason.

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1 Answer

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LG has a problem with bad electrolytic caps-remove cover look for swollen caps-replace all swollen caps

Sep 10, 2009 | LG 42LC2D 42 in. LCD HDTV

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The back light circuits is dead, send to LG fix for free

Feb 16, 2009 | LG 42LC2D 42 in. LCD HDTV

1 Answer

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Try pluging in the euro connecters in tight on the back of the set or in some cases HDMI cables

Jan 30, 2008 | LG 42LC2D 42 in. LCD HDTV

1 Answer

LG 42in LCD Television - turning unit off

The amount of standyby power consumtion is minimal. The only way to turn it off completly is to disconnect the power from the TV. This will however increase your start up time when you want to use the TV.

Nov 28, 2007 | LG 42LC2D 42 in. LCD HDTV

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