Question about LG RZ32LZ50 32 in. LCD Television

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No picture after 20 mins on LG LCD Tv

After my LCD TV has been on for about 20 minutes, the picture goes black, but the sounds still plays. It's weird.

Any ideas how to get this fixed??

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  • Anonymous Mar 14, 2008

    hi i have a 32" xenius lcd tv amd iam haveing problems with the picture i can be sitting watching it then it just goes black but iam still getting my sound with no probs at all ave bought new scat leads and everything can anyone help please

  • Anonymous May 27, 2008

    the same problem ,i have a RZ32LZ55 only have it a year and a half

    picture gos but the sound is still there.. any come back on this do you know....!

  • Anonymous Jun 05, 2008

    I have got this RZ20LA90 about 18 months old, and after about 10secs pic goes blank, sound ok, and channel chnage takes a good 5secs to respond, maybe the two are linked, please help for a solution. Thank you

  • dannyhamer07 Jul 09, 2008

    i have a 32inch lg lcd and the screen has gone black and i still get the sound??? why???? is this common and what is it???

  • Kuma De Silva Jul 15, 2008

    I got a LG 32: LCD TV model 32LC7R around 6 months back from Middle East. After 15 to 20 mins.the picture goes black but I get the sound. Could someone help me from where I could buy/get the service manual or circuit diagram. My email

  • kxris Sep 24, 2008

    1. My LG32LC7D 32 inch lcd hd black some times I turn it off and it takes 5 seconds to respond to the remote sometimes the picture freezes and when you turn it off & on agani it works fine adn then it might not do it again .then it comes back in a few days, there is always sound even when you change the channel .what is the problem .This tv is from December 2007 to Septenber 2008.This is driving me mad. I want my money back L.G.

    2. this tv cost me $1000 us.

    3. Chris from Jamaica. HHEEELLLPPP.

  • villan64 Dec 21, 2008

    my xenius 37 lcd just went mad on me and now its asking for a pin number which i dont know does anyone know if theres a default pin for this make

  • lyricale83 May 11, 2010

    I have exactly the same problem on my techwood 32'' lcd hd tv. After 20mins it goes black with sound still playing. im sure teh backlight is fine as when i turn it off it goes from a lighter black to a darker black. anyone have an idea how much it will cost??




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After extensive testing of my LG set and finding 6 sets with the same fault.... it was the capacitors on power boards bulging.... It looks like the capacitors LG used were a bit.... well....naff... I replaced them with new ones from an online supplier and the set has been ok for 8 months now.... LG engineer told all my customers that the screens had gone... Fault starts as sound and no picture, turn off and on a few times and the picture returns..... seems to be on various models...... Hope this helps.....

Posted on Aug 29, 2011

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I have rz-20la90 with same problem. Having spent some time on it I have discovered one of the backlight latch transformer has an intermittent winding, but I dont know where to obtain a new transformer from. Any suggestions welcome.

Posted on Mar 02, 2009


The inverter is the most likely caulsa as it supply the back light with power

Posted on Sep 23, 2008

Same problem with LG 42LG30 lcd tv. From what i have read up on, it seems to be an issue with a part known as the inverter board

Posted on Sep 04, 2008

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I have a 32" lg hd flat screen an it now does the same thing i got it on boxing day an its not even 5 months old

Posted on May 15, 2008

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