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40 samsung lcd picture problem

The TV picture will OK for about 5-10 minutes. then it starts getting a liitle distorted, with a light greenish color. The picture after a couple of more minutes starts to flicker. then soon after that the picture will turn solid yellow with white lines verticle acrooss the whole screen and once in a while a distorted picture will appair. If you shut it off for 10 minutes, the picture comes on fine again and goes through the same cycle.

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First check the power supply board for puffy capacitors. then change the t-con board on lcd panel

Posted on Mar 09, 2010

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It sometimes makes a static nose and the picture is dark i have tried messing with the color and back light settings and it doesn't do much


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Why does picture have lines of different colors?


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Dec 11, 2015 | Sharp Flat Panel Televisions

1 Answer

I replaced both backlight boards but still having problem with LCD TV...it is too dark and color distortion.


Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Oct 05, 2015 | LG 42LC2D 42 in. LCD HDTV

1 Answer

How do I know which part to replace in my LCD TV...is it the backlight or t-con or main board?


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electronicshelponline.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement.

Sep 23, 2015 | LG Flat Panel Televisions

1 Answer

How do I fix an occasional black screen on a Samsung LN46B630?


Sounds like T'Con board fault. For some models of Samsung LCD TVs, this part is built in the panel, means non-replaceable. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Aug 20, 2015 | Samsung LN46B630 LCD TV

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Samsung LN-T4071F picture starts clear, then gets grainy as the TV stay on.


I have samsung TV 40 inches flat screen comes on the picture ok but within 10 minutes the picture goes black and white

Jan 20, 2013 | Samsung LN-T4061F 40 in. LCD HDTV

1 Answer

My Samsung T4665F has a start up problem. Initially Relays click then eventually it starts up but with colored pixels over the whole screen. Then I have to switch off/on one more time and the pixels go...


This tv 100% have power supply board problems and might also have the T-CON decoders board problems too.The power supply board,that the board,where the power a/c cord plug into it.The T-CON decoders board,that the board sit wright in the middle bottom of the LCD screen panel.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.Replaced the power supply board,should get ur tv power up right away and work,no more series of clickings noises.But,if the tv still have alots colored pixels lines on the screen.The T-CON decoders board it also dead.Replaced the T-CON decoders board too.

Oct 29, 2010 | Samsung LN-T4665F 46 in. LCD Television

1 Answer

Liitle white dots on the screen


Seen an LCD like this before, sometimes it is from the display not repairable

Feb 01, 2009 | Samsung LE40R72BDX 40 in. HD-Ready LCD...

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