Question about Samsung LNT4669 TV

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Dark screen on samsung lnt4669fx lcd tv, what could be the problem?

I have a Samsung lcd tv model# LNT4669FX/XAA that has the right half of the screen dark and with some distortion/blur in the dark area! Is this the T-Con board gone bad or what could be my problem?

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As you suspect, it might be of T'Con board fault. Check all the flat cables connected to T'Con to panel should be checked first for any loose contacts. Re-seat them once. If you wish to know more, check this site. It has illustrations of screen shots, for Samsung LCD TVs, with a faulty T'Con board. Can compare these images with your TVs.

Posted on Jan 24, 2013

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Posted on Jan 02, 2017

jdvillanueva
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SOURCE: my samsung model #LNT4669FX/XAA clicks the

Hi ekrokosz,

If you're unit has a start-up problem, then this is an indication of out-of-regulation in the power supply board. This is caused by leaky/dried electrolytic capacitor in that board. In the first stage of the symptoms, warm-up will make itself stable but it will get worst, time will come that the unit will not power up at all.

Leaky electrolytic capacitor has bulged/dome at the top and can be easily identify by visual inspection. See sample picture below.

jdvillanueva_106.jpg
Faulty electrolytic capacitor with dome at the top.

Dried electrolytic capacitor has no physical indication of fault. You must have a capacitor checker to determine its condition.

If you don't have necessary tools and test instrument and can't troubleshoot the unit yourself, I would advice you to replace the entire power supply board, this is more convenient because no soldering required. Obtain it from your local Samsung service center or online.

Hope I helped you.
Have a nice day!
Thanks for using Fixya.

Posted on Aug 24, 2011

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