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Equipment Repairs => LCD TV forum => Topic started by: davenjax on September 06, 2010,16:34:22

Title: lg32lc56 no sound/picture just backlight
Post by: davenjax on September 06, 2010,16:34:22

hi there any help would be appreciated i have an lg32lc56 symptoms are no sound no pic but inverter and psu appear to be functioning please help thanks .i have some tips i will post soon

Title: Re: lg32lc56 no sound/picture just backlight
Post by: sparky on September 07, 2010,04:24:44

hi
tv tony your man he might say and try headphone skt
there as been a fault there also have you checked in
tuning mode the correct region for sound is set
dave

Title: Re: lg32lc56 no sound/picture just backlight
Post by: davenjax on September 07, 2010,05:50:12

hi thanks for your reply yeah region setting is fine the funny thing is it was working pwerfectly then the sound went and the picture followed but the inverter is atill functioning ?

Title: Re: lg32lc56 no sound/picture just backlight
Post by: davenjax on September 07, 2010,05:51:40

please excuse the spelling i should look when i type

Title: Re: lg32lc56 no sound/picture just backlight
Post by: tv tony on September 07, 2010,05:59:20

hello, have you noise on screen, or just blank?
tony walker

Title: Re: lg32lc56 no sound/picture just backlight
Post by: davenjax on September 07, 2010,06:39:03

hi tony its just blank there was picture then the audio failed now the picture has as well but as i mentioned the inverter is functioning the psu number is eay36768101 sounds like your the man to be speaking with

Title: Re: lg32lc56 no sound/picture just backlight
Post by: Turnip on September 08, 2010,12:21:22

Hi DJ,

Have a little on this set - mostly from our Tony the LG King and Hero  - Chris

Title: Re: lg32lc56 no sound/picture just backlight
Post by: davenjax on September 09, 2010,09:11:35

cheers for the info chris ill do the mod and see what happens many thanks

Title: Re: lg32lc56 no sound/picture just backlight
Post by: davenjax on September 14, 2010,09:20:41

hi im guessing if my main board has tdks applied and not ceratechs i cant do the mod ??

Title: Re: lg32lc56 no sound/picture just backlight
Post by: davenjax on September 21, 2010,06:17:43

hi all after replacing my main board with on from a smashed tv i had the fault had cleared but reapeared so replaced the psu with a spare and fault has cleared and been running for hours with no problems so issue is with the psu i would say but will keep testing and update

Title: Re: lg32lc56 no sound/picture just backlight
Post by: davenjax on September 25, 2010,07:04:24

hi all this set has been functioning normaly for over a week now so just to re cap original fault was loss of picture and audio with just a glow from the inverter but not switching to standby .psu replaced and fault has cleared and set is working well .dave

Title: Re: lg32lc56 no sound/picture just backlight
Post by: Turnip on September 25, 2010,13:01:55

Hi Dave Njax,

Congrats, but notice you made no mention of integrated Power/Invertor on this model

So you've got something different ? - do tell - Chris

Title: Re: lg32lc56 no sound/picture just backlight
Post by: davenjax on September 25, 2010,13:23:41

sorry to dissapoint chris just a lack of detail my fault it does have an integrated psu/inverter panel number is eay36768101

Title: Re: lg32lc56 no sound/picture just backlight
Post by: obagama on September 26, 2010,05:44:30

Hello all,

Here is my success story with this issue where the tv set turns itself off after 20mins or hours use.

I changed the usual capacitors 1000uf and then the blue Class X2 Capacitor c708  which I bought from maplin (code n74cn)

http://www.maplin.co.uk/Module.aspx?ModuleNo=98166

which did the trick.

This blue capacitor is next to the inverter choke t701.

hope this helps everyone