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Equipment Repairs => LCD TV forum => Topic started by: EVILMRB on April 30, 2011,06:18:53

Title: LG 32LC46 No pic or sound
Post by: EVILMRB on April 30, 2011,06:18:53

Hi i have two of these sets and both have the same fault. The sets both turn on but i have no sound or picture
i have changed a couple of caps but no luck, also i have had a look at the boards and both of them have already had the mods done in the factory already..Please can anyone give me any tips..Thx :051bye:

Title: Re: LG 32LC46 No pic or sound
Post by: davenjax on April 30, 2011,10:17:59

hi id be changing all the main caps on the psu had it with an lc 56 worked for me .dave

Title: Re: LG 32LC46-zc No pic or sound
Post by: EVILMRB on April 30, 2011,14:38:04

Hi just been given another set but the screen is smashed the only thing is the psu is diffrent on this one and i cannot even change the screen because that is diffrent aswell.One was manufactured in 2007 and the other in 2008..

Title: Re: LG 32LC46 No pic or sound
Post by: michael first on May 02, 2011,04:23:58

Hi,
have you noticed,the backlights are on for a short time or not or maybe are on all the time;it's important to know 'cos you can say if the inverter is ok or not.

Title: Re: LG 32LC46 No pic or sound
Post by: EVILMRB on May 02, 2011,08:18:27

Hi micheal,there is no backlight at all but if i turn the set on in the dark there is a little flash on the screen.

Title: Re: LG 32LC46 No pic or sound
Post by: davenjax on May 03, 2011,04:26:01

hi sounds like the inverter to me and but that wouldnt account for no sound ..probably the tv is in ext /hdmi with no inputs connected .connect the tv via scart to another tv and see if you get a picture coming through on the tv your connecting it to .dave

Title: Re: LG 32LC46 No pic or sound
Post by: jimca007 on May 06, 2011,04:41:36

had a couple of these wee cheap combi boards with inverter transformers O\C on the secondary coil also the wee blue caps tend to go down, change the caps first see if that brings your backlight up if not theres a good chance one of the transformers on the inverter has gone down or is dry jointed. Good luck !

Title: Re: LG 32LC46 No pic or sound
Post by: EVILMRB on May 06, 2011,16:52:12

This is the powerboard in my lg its not the one with the combined inverter, because this is from the 2007 model.also this is the invertor board aswell....