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LG 42 LB9DF-AD software version: 3.23.01 No sound on channel 70 hd

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I have a lg lb9df with version 3.11.00 no sound on 7gem and 7 mate

Posted on Nov 08, 2010

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Posted on Jan 02, 2017

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The aspect ratio on the HD channels are full screen - which is correct. However all other channels have the incorrect aspect ratio. (reduced size) A solution please???


Many times HD channels will come in more clear, but with a smaller picture or widescreen view. There should be a button on your remote called 'wide' or 'zoom' and it will let you adjust the size on the fly. If you adjust the view while watching an HD channel, and you switch to a standard channel, you will have to change the ratio back. For other information and help with LG TVS visit http://www.lg.com/us/support. Thanks

Mar 31, 2011 | LG 42SL9000 42 in. HD-Ready LED TV

1 Answer

No sound on 90 HD Digital Channel


You need to get in touch with Lg and they will help you. All you need is for them to either post you a usb with software or they can email it to you and you can put it on a usb and put it on your tv via usb port and update the software on your tv.

The frequency for the new channel is not on your tv but they will give you the software to update so it works.

Good luck!

Jul 02, 2010 | LG 47LC7DF 47 in. LCD HDTV

1 Answer

HD channels look terrible


You may not have the resolution set to hd even though you are on the channel. Confirm that you are using hd cable and your set is displaying 720p or greater. This will sometimes pop up on the screen when you tune to a hd channel. it sounds like you are on 480 i or p. good luck

May 04, 2010 | LG 42PX5D 42 in. Plasma HDTV

1 Answer

Pixilization on non hd channels with hdmi cable connected to HDPVR receive. HD channels come in crystal clear, non hd channels are all bitmapped and horrible


Your TV is not at fault, it is showing you the difference between HD and non HD channels. HD TV's work great with HD scorces but don't usually look that great with standard definition, Also the non-HD channels are more likely to be heavily compressed which makes them look bad too.

Nov 03, 2009 | LG 42LG30 42 in. LCD HDTV

1 Answer

Audio sync problem with LG 42LH30 LCD TV, TV is hooked up to HDTV PVR, problem occurs with HD stations


Contact your LG dealer first as the software version of your TV would need to be checked. Most likely the software needs updated which can only be done by a service engineer.

Oct 23, 2009 | LG 42LH30 42 in. LCD TV

1 Answer

Have new LG 42" LCD and no sound on the 5.1 Surround Sound


Try running a set of audio cables(Red/white) from your audio out jacks on the back of your TV to your reciever's audio in? 

Feb 01, 2009 | LG 42LC2D 42 in. LCD HDTV

1 Answer

Sound issue on LG 42LG50


make sure the dish network menu settings in setup under audio are on high. Some tv's require it to be off. Try both and see what works. Also the delay is caused by digital conversion. new stereos have settings for this delay and they have delay boxes for sale online. You could try to change your delay settings on your stereo surround to help. I had to do this.

Nov 29, 2008 | LG 42LG50 42 in. LCD HDTV

1 Answer

42 inch LG Plasma TV - Lost picture


sounds like it may be a software upgrade

Oct 16, 2007 | LG 50PX4DR 50 in. Plasma TV

1 Answer

Favourite setting lost when switched off


I think it is actually Channel 7 causing the problem. I have the same TV and have noticed that Ch7 only drops off the Favourites list when 7 telecasts a program in Standard Definition (SD) on the High Definition (HD) channel 70. They usually seem to do this when broadcasting sporting events. You can check if they're broadcasting in SD on the HD channel 70 by pressing the "INFO" key (also labelled "<<", just above the "TEXT" key). The channel description will read "70 7 SD Digital" instead of "70 7 HD Digital". (You will also see this when you change to channel 70 during these times.) Every time they've done this, I've lost the 7 HD channel from my favourites list. If you re-program channel 70 into your favourites list while it's broadcasting in SD, it will disappear from the favourites list when 7 starts broadcasting a HD signal again. I think I read somewhere that this happens because channel 7 isn't really transmitting a SD-resolution (576i) program on the HD channel, but instead just redirecting your TV to the SD channel's signal (Ch 7 on the tuner) - or something like that! I haven't yet found a way to stop this from happening other than to not change to HD channel 70 when they're telecasting a SD program! I have to admit, it's annoying, but it's a minor glitch in what I believe is an otherwise outstanding TV. I intend to email Network 7 about this problem. Maybe if the problem is their fault and enough people hassle them about it, they might do something to fix it! - Mav (Australia)

Jun 28, 2007 | LG 42PX5D 42 in. Plasma HDTV

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