Question about LG 37LC7D 37 in. LCD HDTV

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42 lg LB1DR lcd tv

My tv has no picture or sound.I cannot do anything on it(menu or setup).It has worked fine for 1.5 years and had gone out on me a couple of times each time shorter times in between.I am pretty sure it is a motherboard but I am out of warrenty.Any ideas?

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SOURCE: 42 inch LG Plasma TV - Lost picture

ysus pcb that supplies voltage to the panel is faulty

Posted on Dec 15, 2007

  • 6 Answers

SOURCE: LG 42 LCD no sound or picture

This is probably bad capacitors on the power supply board. My LG 42LB1DR has a known problem with this and I replaced the four bac capacitors myself and saved 5-6 hundered dollars that I was also told that it would cost to fix. I fixed for under 10 dollars and about 20 minutes. LG knows about it but they dont really want to admit it. My TV was only 26 months old when this happened. The four capacitors are made by Samxon and are 2200uf @ 10v. They are junk so even if you have the entire board replaced for say $200 its just going to happen again. They need to be replaced with a different brand.

Posted on Apr 29, 2009

  • 12 Answers

SOURCE: 42 inch LG Plasma TV - Lost picture

Most likely what happened is one of the capacitors went bad. When a capacitors goes bad it produces a popping sound. This could be an easy and cheap fix if you find the bad capacitor or capacitors. The bad capacitor will have a bulging top most likely on the power board but could be anywhere.

Posted on Jul 07, 2009

  • 1 Answer

SOURCE: loose picture sounds stays on

password for rar file
manualspace.com

Posted on Dec 29, 2009

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SOURCE: 42" LG lcd tv has sound but no picture


Hello, If there is a complete darkness on the screen, it is likely that the problem is on the card that responsible for providing backlight to the screen. Known as invertor. Sometimes the causes are: 1 loose contacts across the card. 2 the main ic that is number begins with OZ .3 More rarely missing of the 24V voltage that provided to the invertor, in this case you should check the power supply. I hope it was helpful!

Let me know if more help is needed.

Posted on Feb 25, 2011

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Hi Craig,
Your Tv has a 1 year warranty, you should contact Customer Service as soon as possible. This is the number in the USA 1-800-243-0000
If needed this is the Global Site. www.lge.com/products/category/list/tv.jhtml
Enter your country then click on Support for the Service Number.
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