Question about Samsung LN-T4042H 40 in. LCD HDTV

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My tv backout picture and sound remain audible, when i turn it off for a while it comes back on with picture and will remain on for a few seconds and then picture will blackout again. what do i need to replace or fix?

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  • Samsung Master
  • 933 Answers

You will most likely need to get the set diagnosed. Sounds like you have a backlight problem. Backlight problems could be cause by a fault in the power supply, main board, inverter board, bad CCFL lamp, or a short in a HV(high voltage) cables. I would say it's worth getting a proper diagnosis. However, if you choose to replace the set, you can get a pretty penny for it on Craigslist. If it is clean and come stand and remote, you could get as much as $100 to the right buyer!

Posted on Oct 30, 2012

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Posted on Jan 02, 2017

lukster
  • 217 Answers

SOURCE: blackout problems

It could be the LVDS cable that is connected between the logic main board and the main board, sometimes this cable is too short and comes loose from one of the boards, it could also be a sign that the logic main is going out or the panel itself is shorting out

Posted on Feb 17, 2007

  • 138 Answers

SOURCE: screen turns black after a few seconds

Check the software and if is is not BX23U-1.5.0.0_03531 upgrade it by downloading the software from www.p4c.philips.com onto a USB stick. If that don't fix the issue change the small signalbaord.

Posted on Aug 19, 2008

  • 4 Answers

SOURCE: Samsung LE40R7 LCD TV Attempts

Possibly due to the main inverter panel, take the numbers off and price one up they vary from £50 upwards

Posted on Apr 08, 2009

  • 58 Answers

SOURCE: need a remote fix for no picture but still have sound for samsung

check if the back lamps are still on when you lose image, all you have to do is get close to the screen and make is totally black and if is not that means you have a back light working, but if the back light is gone you may have a defective panel.

talked to samsung TA about the same problem I had and the recommend to replace the power supply first to confirm a defective panel because a panel is quite expensive

Posted on Jun 15, 2009

  • 4090 Answers

SOURCE: Samsung ln t4665f : Power Light On , No Picture : Clicking Sound

there is a soloenoid type switch that fires the TV up this has failoed. its like a neon or fluoresecent tube that has a faulty starter switch light tries and tries but never quite makes it when it does get going it has that purple smear in the tube. that is the simple explanation for your problem. part is about $60 labor is unkinown as i am not in USA but looking at some of the rip off charges I am glad i dont have the bill

Posted on Aug 20, 2009

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If I have helped you with your issue
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