JVC  42 in. LCD TV Logo

Related Topics:

Anonymous Posted on Sep 15, 2017

Buzzing noise JVC LT-42DA8BJ I have the above model which has been perfect, right up to today.... It now has an annoying buzzing noise coming from the rear behind and above the side manual switches. Is this unit beyond repair? What exactly would cause it. It is wall mounted with no other electrical devices around barring sky hd box 1m away. Your comments would be appreciated

5 Related Answers

Anonymous

  • 105 Answers
  • Posted on May 18, 2009

SOURCE: Loud, high pitched hum from speakers . . .

This is GroundNoise from the TV's Backlight.

Sorry, but unless you are a Technician, you will simply need to ignore it.

If you are a technician, you can fix this by grounding the Audio ICs to the Power Supply (details not provided)

Ad

Anonymous

  • 150 Answers
  • Posted on Jun 08, 2009

SOURCE: I have a 2006 JVC LT -32x585 Can it be wall mounted?

hi, this info will only be available in your owners manual or from jvc, do a google for jvc cust. service that should get you what you need, gl, video-tek

Anonymous

  • 1 Answer
  • Posted on Jan 25, 2010

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.

Anonymous

  • 1 Answer
  • Posted on Jan 03, 2011

SOURCE: My JVC LT-47X579 is not "turning on" since we

hmm i had the same problem the saturday before on my lt-42x579but i didnt have anything hooked up to it blue light came on then flashed ..no pic this happend one week after it was pd off from a rental store we should investigate

Azrael SRL

  • 11800 Answers
  • Posted on Feb 15, 2011

SOURCE: My JVC LT-47GZ78 will not

The blinking indicates that the protection system of the power board from the tv has detected a short on one of its outputs and has cut the power to it to prevent further damage - the clicking is made by the main power relay being disengaged, repeatedly, by the protection.
You should count the blinks - it's an indicator of what might be faulty. If the blinking is continuous then the problem is either in the control processor or the power source itself. To find out which and replace the appropriate board the tv will have to be opened and inspected.If you;re lucky it will be just the electrolytic capacitors on the power board. This is how you replace them
http://www.youtube.com/watch?v=YCSNWi3UHf4
If there's more then you will have to check the voltages on the power board to find out what elsehas failed . If you can't do that then it's time to call a repairman.

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
1answer

JVC LT-42DA8BJ When playing my ps3 in hdm1 port everything is fine execpt the hdm1 e4 720p logo in the corner of the screen won't disappear. I also cant find the remote however if the only fix is on the...

I believe that is the display or exit button.when you find the correct button, the display will cycle through a few formats and then disappear. JVC is a lot like Sony in that you better never lose your remote control.
0helpful
1answer

I have a JVC LT 32 EX 18 TV. When connecting my laptop over HDMI, playing on a playstation or WII the sound and picture work perfectly. When I want to watch normal TV over cable though the problems start...

If the rear inputs work consider connection for the channels with a box using one of the rear inputs--sounds like a tuner related issue and going to the rear inputs bypasses that.
1helpful
1answer

JVC TV LCD Model LT-42PM30 intermittant buzzing noise

Most likely suspect is the power supply board---transformers on that board can and do vibrate hard enough to cause this.

At our shop we either locate the part creating the sound and treat it to hot blue to muffle and remove the noise or if confirmed to be on power board--REPLACE THAT BOARD.
1helpful
1answer

BOUGHT JVC AV-56WP74 IN JUNE 2004. 52

It is worth getting an estimate. From the symptom you explained, it looks like the horizontal output transistor became defective.
0helpful
1answer

Jvc lt-32c50bj

The green,blue,red hd plugs are for video only. you'll never get sound to produce out of a video line. audio comes from left and right which usually is white and red. it's always marked above or below the jack input.


C-Dog
0helpful
2answers

JVC LT-42DA8BJ

unable to get laptop image on samsung lcd tv. Can anybody post some clue please
0helpful
1answer
1helpful
1answer

Buzzing Noise and TV picture is yellow

Andy, I'm thinking the buzz is from the deflection coil (yoke) on the neck of the tube or the power supply. Probably not the high voltage as you can hear the "buzz". If it's really that annoying, you can take a length of rubber tubing (no metal) and listen to the buzz coming from the chassis kind of like a stethoscope. STAY AWAY FROM THE HIGH VOLTAGE, please. The yellow picture sounds like a blue chroma failure. A tube can be rejuvinated if need be but that's a job for a pro. Hope this helps.
Not finding what you are looking for?

47 views

Ask a Question

Usually answered in minutes!

Top JVC Televison & Video Experts

Grand Canyon Tech
Grand Canyon Tech

Level 3 Expert

3867 Answers

matt martin
matt martin

Level 3 Expert

1259 Answers

 Grubhead
Grubhead

Level 3 Expert

5755 Answers

Are you a JVC Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...