Question about Sharp Aquos LC-42D62U 42 in. LCD HDTV

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Sharp LC-32D40U no picture but audio works.

Cycling power repeatedly will usaully get it to work. Sometimes once but generally it takes 30 to 40 times.

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  • Anonymous Jan 02, 2009

    It seems as if the backlight goes out. If you look at the screen from an angle, you can see the 'picture', the LCD pixels are in fact working.

    we've seen sensitivity to humidity with this, and it seems to go away if you let the TV warm up a bit - leave it on for a bit even with no picture, then power cycle.


  • gemma51 Jan 09, 2009

    Hi
    I am having the same problem what is power cycle ?

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It might be adjusting the power requirement of the unit, there might be power / current flactuaqtion in your area

Posted on Dec 10, 2008

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I believe he is right about those models being basically the same. They often make small changes like the layout of connectors so that they can have different models to sell to each store. It defeats the "price matching" ads some stores use. It sounds like one of two issues. Either a bad capacitor (a very common problem on this model, apparently) or a heat issue. Since it seems to happen every time, even if the machine has been offline for a while, and it takes so little time to do, I'm inclined to throw out the heat issue. Open up the back and see if you see any capacitors leaking, or crooked. I can't find images for capacitors in your machine, but I did find a site about bad capacitors on PC system boards - the capacitors are basically the same thing, so it might help you identify that. http://www.badcaps.net/pages.php?vid=5 If you do see bad capacitors, either solder on new ones, or just replace the entire board. It should be simple to replace. I can't find parts for this online, but you should be able to get them either from Sharp or from a local repair shop.

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Comment by Guest, posted on Oct 25, 2008My Aquos has the same problem. I'm not sure how I discovered this, but when I lean the TV forward and hit the power button it will turn on every time. If the screen blacks out and I don't lean it forward when I hit the power button, the screen will just remain blank. It is very weird, but at least repeatable.

- Thank you, Guest. That did it. It definitely seems to be a problem with the TV. Tilting it and hitting the power button helped me get the video back.

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