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I have a Samsung LA26R71BDX LCD Television. It is 3.5 years old. On and off the picture freezes and then displays vertical coloured lines. I can still hear the audio.

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Hi,
This kind of symptoms indicated of internal board's malfunction. The affected boards are the sustain boards, control board, and power supply board. Plasma tv is the most hard working tv nowadays. Excessive heat build up causes the boards for malfunction.
First you must isolate the unit from loose connections because it will do same symptoms. Pull-out the cables connected from the said boards, inspect, re-insert and ensure its connections. If the symptoms still persist, check the boards for bad filter electrolytic capacitor. Faulty capacitor has a bulged/dome at the top and will produced an out-of-regulation in the supply voltage and will affect the performance of the boards feeds from it.
I have a Samsung LA26R71BDX - jdvillanueva_22.jpg<<<<(faulty electrolytic capacitor)

You may isolate also the faulty boards by touching its IC's, you will feel that the IC gone to excessive heat even a few minute of operation only.
This kind of symptoms is quite technical and needs an experienced tv technician to troubleshoot the unit if the simple fix didn't cure the problem.
If you don't have necessary tools and test instrument and can't troubleshoot the unit yourself, I would advice you to look for a professional or sent it in.
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Posted on May 25, 2011

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Posted on Jan 02, 2017

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