Question about LG 42LB1DRA 42 in. LCD Television

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Tv tuner and sound do nt work. shuts off when channel or volumn is changed

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High chance the main board is bad in this set, it controls almost everything in the set.

Posted on Dec 08, 2012

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Posted on Jan 02, 2017

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My Sony Bravia television froze on a digital picture today and now when I change channels there is no picture and no sound. I tried to do a digital scan and it picked up no digital signals,. The analogue...


Hi,

Your TV has a dual tuner - one for analogue and one for digital although they are contained on the same tuner board. It's possible that the digital tuner has failed, in which case the tuner board will most likely need to be replaced, but often this problem can be resolved with a "hard" reset. Turn the TV off and unplug it. Remove all the cables from the back, leave it for at least 5 minutes and then re-connect only the cable from the tuner source. i.e aerial/antenna. Make sure you are in Digital TV mode (DTV), then run the channel scan again.

If it works turn the TV off, re-connect all of your other devices and you should be able to resume using the TV as normal.

If this doesn't work, you may need to have the digital tuner replaced. The analogue and digital channel feeds are from the same source. As the analogue channels are working there is no obvious fault with the feed or cables.

Please try this first and then post back for further assistance if needed.

Regards,
BElectric

Dec 23, 2010 | Sony BRAVIA KDL-40S2010 40 in. LCD...

1 Answer

ILO LCD Color HDTV does not change channels / volumn...just turns on/off


It's unlikely that a setting you changed in the user menu would have locked out both the remote and the panel.

It sounds to me like the micro has gone bad. One other option, is a stuck or damaged button assembly. Corrosion on the button board can lock the micro.

Nov 22, 2007 | iLO 3200 32 in. LCD Television

1 Answer

My tv set is nt tuning any channel


your electronic tuner in the set may need replacement.
Are you using a remote to change channels it may be the batteries in the remoter that needs to be refreshed.
Not a lot of detail here as to what model TV this is or what remote is used.

Jan 23, 2010 | Apevia X-TELSTAR-BL ATX Full Tower Case

1 Answer

Tv is on, screen is black. Sound is working. Channels won't change. Tv will not turn off.


tuner/decorder is gone out you would need to purchase a new decorder board for this. Try hooking up something on the scart connections and diagnost the tuner but if it does not change channels and its not turning off you got a problem with the decoder/tuner board.


this would cost around $250 for the replacment.

Jul 19, 2009 | Vizio SV420XV 42 in. LCD TV

2 Answers

Centre input active


Go to..
Menu / Setup / Source

Scroll down and Highlight Center Input, And select Off.

If it dont work first time round, Disconnect all Audio/Video leads from TV, and try again.

Jan 22, 2009 | Philips 42PF9966 42 in. HD-Ready Plasma...

1 Answer

Channels changing


What happens when you "hide" the remote from the TV so that the TV can't "see" it?...accordianman

Feb 29, 2008 | Apex Digital GT2015DV 20 in. TV/DVD Combo

1 Answer

No Picture, no Sound but menu still useable.


B+ voltage to run tuner missing = open resistor in power supply
Or bad tuner ? Did you try the A / V inputs on back of set? What
is the Model # ?

Jan 01, 2008 | Panasonic CT-36D32 36" TV

2 Answers

No channels above 47


That works great except I can get the tuner to program any channels above channel47. Is this a limitation of this older model TV yes there is limitation in old tv. is there some setting I can change in order to get more channels using the tv tuner? in INDIA what we do is put a remote control ckt which gives us about 250 channels. of course we replace tuner also called hyper tuner along with remote ckt or replace whole kit which are cheaply available.& serves the purpose. hope this will help

Oct 03, 2007 | Televison & Video

1 Answer

Volumn not working


WHen I hit the mute button again to bring up the volumn the sound remains muted. I have tried all other channels, direct cable and even a dvd player connected. No sound. I unplugged all the boxes and tv and then plugged in again in a attempt to reset what might be wrong. Still no sound. solution 1 while operation mute button has got demaged or pressed more. 2 sound section might have gone defective in tv 3 no supply to sound section 4 or speaker defective or ic got demaged.

Aug 02, 2007 | RCA 27V520T 27" TV

2 Answers

TV picture


The set you have has a bad tuner assembly. At this point most likely you would be better off getting a new TV set. Good Luck

Mar 30, 2007 | Mitsubishi CS-27309 27" TV

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