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Lcd tv no power no sound picyure - Televison & Video

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Thank you for responding to my inquiry. I unpluged the tv and left it off all day , when I pluged it in the power light came on and it is working now.

Posted on Sep 12, 2008

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1 Answer

MY T.V. HAS POWER BUT NO PICYURE WHY WHAT CAN I DO TO FIX IT


T'Con board fault. Check and replace it. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Faults and possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

Sep 15, 2016 | Televison & Video

1 Answer

What is a tv inverter


the inventer board powers the backlight of your lcd tv to allow you to see it,a faulty inventer board wont send enough power to the backlight causing the screen to be black(if you shine a torch or look carefull you can still see picyure bbut the backlight aint lighting it up)

Mar 19, 2013 | Samsung Televison & Video

1 Answer

PICYURE IS BLINKY AFTER COUPLE OF MINUTES WHEN TV IS SWITCHE ON


need a new lamp , this normal problem when the lamp is bad work for a few minutes and gose off , replace the lamp

Sep 27, 2011 | Samsung LE40M91B 40 in. LCD TV

1 Answer

TV HAS SOUND NO PICYURE


First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Please post back what you find.

Oct 22, 2010 | Polaroid TLA-04011C 40 in. LCD TV

2 Answers

Sound but no picyures


First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Oct 17, 2010 | Vizio GV42L 42 in. LCD Television

1 Answer

Just brought tv home and it is too bright. nothing i do changes it help me


try going into the menu of the tv and adjust brightness lower or in some cases flat screens have an option for picyure quality like , sports , movies , try putting it on movies and sometimes that will take away brightness

Apr 25, 2009 | Dynex DX-LCD32-09 LCD TV

1 Answer

No picyure but i have sound


Sounds like you have a bad inverter, try this trick.
When you have sound take a flashlight and shine it on the screen, look very closely and see if you can see a video image.
Let me know and I will assist you further.
lone99star

Jan 07, 2009 | LG 42LC2D 42 in. LCD HDTV

1 Answer

No picyure


you havent connected the av leads properly,red and white are for sound and should go from audio out on tv to audio in on sound system,

yellow lead is for picture (aka video) goes video out on dvd player.to video in on TV

basically you need sent video signal from......to

normally have to use AV inputs,so u need turn telle to AV1 or 2

Jul 07, 2008 | Durabrand STS92 System

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