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Legend lec3719 has horizontal lines

I just took apart my legend lec3719 lcd tv. its flashes green pink red with horizontal lines and you can't make anything out on the screen. I believe its the power supply circuit board however there are no bulging caps on it. any suggestions? any one know where I can pick up a new board?

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  • Televison & ... Master
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It sounds to be a main digital board fault. If you wish to get more, http://electronicshelponline.blogspot.com/ Pull up previous posts there, either by type in the Brand name to your set in its search box, or view it in Mosaic / Timeslide / Flipcard option.

Posted on Jul 30, 2013

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Posted on Jan 02, 2017

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SOURCE: LCD TV SCREEN PROBLEM RED HORIZONTAL LINES OF DOTS ALL OVER SCREEN PLEASE HELP

I unplugged the TV and now the picture is back.I read that the LCD's are vunerable to static build up so unless my daughter is using her TV I unplug it.

I was thinking about getting a large LCD for the family room but I'm not going to until they improve on this technology.

Good luck to everyone!.

Cheers.

Posted on May 08, 2008

  • 90 Answers

SOURCE: philips lcd 37pf9431d/37

finally got some help from customer service ----
the code flashing one then two red lights is for an upgrade of the software ---- you can go to their website and download a current fix to that problem onto a thumb drive----
\the power problem is caused by a bad power board--- you can replace them for any where from 130-330.00
dont need a service tech - take off cover and easy to replace---can find part on parts store.com for philips televisions --- used is about 130 and new about 330 -- used is a refurbished unit and works just as good as the new one

Posted on Feb 23, 2009

dsacco86
  • 1077 Answers

SOURCE: We also have a Vizio with red horizontal lines and our TV is new

It's possible that the motherboard or the controller board for the screen is defective. At this point, I would use the warranty from Vizio. It should be no doubt that it covered. Here's the info you will need from the Vizio web site.
http://www.vizio.com/support.aspx?id=1588

Posted on Jun 13, 2009

  • 44 Answers

SOURCE: Bad power supply and regulator circuit

I had the Same issue. on a 50PF9431D/37 set. Many Plasma Set's use a LJ44-00118A PS-505-PH Power supply from Samsung. Known to have this common problem. If you can, or have a friend that can Solder components?. Unplug your set remove the back panel & locate your power supply. It will be the PCB in the center of the set just above the Video/Audio connections. http://www.shopjimmy.com/power-supply-unit-lj44-00118a-from-philips-50mf231d-40.htm. Is a Link to a photo of the PCB. Make a note of the locations of all cable connections then unplug them all. Un-install PCB, Check all Fuse first. I believe their is 5 or 6 of them on the PCB. Then replace the two 3300uf 10v 105C Radial capacitors at C8060 & C8059. Look to see if the Caps are deformed and or split at the top. The location of the caps are in the Lower bottom edge of the PCB. A local shop may Carrie them if not, digi-key has them. Part # http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=493-1754-ND. Total cost was $7 with S/H.

Posted on Jun 25, 2009

  • 308 Answers

SOURCE: samsung ln40a530 blinking red light, no video

Blinking lights are usually an error code. Do you have a manual that will decode the number of blinks? Its not always the power supply.

Posted on Apr 21, 2010

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