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I have JVC smart TV LT-55N875 asking for a pin and has a back screen yet has sound.Please help

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5 Suggested Answers

sparky1500

Matthew Spark

  • 1066 Answers

SOURCE: TV screen went dark, but sound still there.

your backlight burnt out, this will be a maybe several hundred dollar repair. the screen is backilt by a very expensive flourescent light, without that light, the screen will be black.

Posted on Nov 28, 2008

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Jim Krause

  • 1779 Answers

SOURCE: JVC LCD TV LT-42X688-powers on, blank screen. no picture,no sound

You most definately have bad capacitors in the power supply. try and get it repaired as soon as possible, not an expensive repair that iv'e seen.

Posted on Feb 04, 2009

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OT Bobby

  • 105 Answers

SOURCE: JVC LT 42x688 no picture just sound

Sorry, this has no easy fix. The good news is you do not need an LCD Panel. The bad news is the Video Processor has a problem.
This TV has x3 Boards. The one you should replace first is the one in the middle. If this doesn't fix it, try the one on the right. The Part #s are on the Boards if you wanna try ebay.

Posted on May 06, 2009

Anonymous

  • 1 Answer

SOURCE: JVC LCD TV LT-42X688-powers on, blank screen. no picture,no sound

Hi , I have the same problem with my LT-42X688,so i called the service of my extended warranty provider . the TV technician just left and told me the motherboard is the problem. he said its the third one this week he has seen with the same symptoms. he ordered the motherboard and i've got to wait 5 to 7 work days before the part will be in . I will keep you posted when the guy will return.

Posted on Jul 21, 2009

Anonymous

  • 1 Answer

SOURCE: JVC LT-42DA8BJ

How are you connecting your laptop to the samsung TV? Is it DVI/HDMI or thru more-common S-video cable? I have successfully ported laptop screen to TV with S-Video. After you connect your S-video cable, right-click on blank desktop of laptop and bring up the Display Properties (usually the last entry on pop-up menu). Got to last tab, usually called Settings. You should see two monitors displayed on top part of this page. One of these (most likely #2) is your TV. Click on #2 monitor and check the box that reads "Extend my Windows desktop to this screen" (or words to that effect). Be sure you have the TV turned on and facing you because you may find yourself clicking on icons on the TV screen. You'll probably have to play with which is primary display because some video players have trouble playing to a secondary screen. You may also try the Fn+F8 (CRT/LCD) button on your laptop (those are the keys on my Dell). That may turn on the TV-out on the laptop. Lastly, remember that this will only get you video. You'll have to connect a 3.5 mm cable to you Line-Out port on the laptop and connect it somehow to your TV or SurroundSound speakers. There should be a audio-in port on those other devices for that. Or you can just play the sound thru your laptop speakers.

I'm not that familiar with the DVI-out but I suspect that it would work very similiarly. Good luck.

Posted on Jan 25, 2010

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