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LN40A550 tv screen blank - Televison & Video

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Fault in the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. 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/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Apr 09, 2015

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Posted on Jan 02, 2017

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Netflix will not connect??


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Oct 22, 2012 | Samsung LN40A550 LCD TV

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Sep 03, 2012 | Samsung LN40A550 LCD TV

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Samsung LN40A550 is very slow to come on.


Hello,
Lets try this...
Open unit, than check capacitors on PCB power.
There are 1000uF / 10 V. That capacitors leaked and almost explode.
Change with 1000uF / 25 V.
I hope it will help you.
Thanks.

Feb 15, 2011 | Samsung LN40A550 LCD TV

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Tv screen turns green


There is a TV similar to this one. I'm predicting that your TV is dying.

Feb 08, 2010 | Samsung LN40A550 LCD TV

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Need a tv code for samsung LN40A550 so I can program my DirecTV remote to operate it.


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Nov 17, 2009 | Samsung LN40A550 LCD TV

1 Answer

LN40A550P3F


You can do it your self, however, that is your total LCD display, it will probably cost in the neighborhood of $1300.00 for the display. They are not like the older projection tv screens that you could replace, these LCD's are the MAIN thing.

Jun 15, 2009 | Samsung LN40A550 LCD TV

1 Answer

New Samsung LN40A550 LCD TV: picture is not crisp.


If you play with blu-Ray with HDMI, you will see the amazing picture quality.
I guaranty.

Jan 27, 2009 | Samsung LN40A550 LCD TV

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