Question about Samsung LN40A450 LCD TV

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I have a Samsung LN40A450 LCD TV that is only a year and a half old. I am getting no power to the tv only a consistent blinking red light and a audible clicking/beeping noise. What needs to be replaced?

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I will explain how to:


  • Open the case of the LCD
basically in all LCD monitors have two circuit boards (power supply board and system board)
  • After you open you will see the two boards are

  • You see a board that has a socket for the power source. wrote that the board we're looking for (power supply board)
  • Remove all cables connected to the board and take out the board. (get noted before you unplug it)
  • Now you see it components on board, we looking for capacitor.(see picture below)
I have a Samsung LN40A450 LCD TV that is only a - 46ddc22.jpg

  • Looking for damaged capacitors, physically you will see a capacitor on the top like a bloated (see picture below)
7a91ba9.jpg
  • Replace the damaged capacitor with the same value that you can see on the surface of the capacitor. (In this step you need any soldering tool)
My advice: replace capacitors with higher voltage, like 10V replace with 16V or 25V will be fine.

Posted on Feb 10, 2010

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Yes,

The capacitors on the power supply are the cause of your problems. This model is well known to have issues with the power supply board. Here is a picture of the power supply board with the problem capacitors circled.

I have a Samsung LN40A450 LCD TV that is only a - 2_17_2012_7_44_24_pm.jpg

And here is a link to a parts kit of capacitors to do the repair.

http://www.ccl-la.com/catalog/product_info.php?cPath=21_33_92&products_id=204

I hope this helps, if so please rate my solution.

BuddyMc

Posted on Feb 17, 2012

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I have a Samsung LN40A450 LCD TV 42 that is only a year and two months. No power to the tv only a consistent blinking red light.
I solve my problem, changing , 2 - 10Vx1000Mfd ectrolitic capacitors of the power supply.
My TV is OK.
Tanks a hundred times for the indication.
Arinto Cruz,74 - BRASIL

Posted on Mar 26, 2010

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Posted on Jan 02, 2017

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