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Set will not turn on initially. Pressing the on button on the side of the set repeatedly will eventually turn on the set it will then go off 2 or 3 times. It will finally stay on. Is this a power board problem?

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  • Televison & ... Master
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Fault with 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 Dec 09, 2014

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: samsung model lnt5271f cycles on and off 7 times when turned on

Im writing this as a public service announcement. Im seeing more and more of these posts, and I thought I would let everone know my experience.

Samsung televisions (and a few other brands) built in mid to late 2007 had a bad batch of capacitors from China. Two of these 10 volt capacitors were installed on their power boards.

When these capacitors blow, they dont hold enough juce to turn the TV on. However they tend to blow slowly. People experiencing this problem, will see thier TV taking longer to turn on, Then it will cycle off and on a few times before finnaly turning on. And lastly, when the capacitors completely blow, the TV will not turn on at all.

The capacitors are cheap, about 50 cents each. People were origonally repairing these themselves because their sets are out of warranty. It is chepaer to solder in new capacitors, because a new power board costs around $150.

However as of Feburary 2010, Samsung has recognised this as a global problem to their sets. If you call 1-800-SAMSUNG, they will set up a service technitian to come to your house and solder in shiny new 25v capacitors. They will not charge you for this, even if your TV is out of warranty. Mine was 17 months old (well out of the 12 month standard warranty).

Its a cheap fix for Samsung, and much cheaper than buying a new TV.

I would suggest registering your TV on the samsung website if not allready, waiting a day, and then calling 1-800 samsung.

They should take care of it. They have a Service Level Agreement that you should have an appointment scheduled within 48 hours of your call. In fact. I called Samsung on a Sunday, and the technitian was there by monday morning (he had a free slot), so I was very pleased with my customer experience.

Stinks that it happend, but at least its being fixed.

Posted on Mar 15, 2010

milkburp
  • 416 Answers

SOURCE: 52 inch hdtv lcd tv LN-T5271F problem turning on

You TV need some capacitors changed on the power supply. I have a tutorial on this repair published in my Tips & Tricks. You can save about $170 by doing this yourself, it's fairly simple if you can use a screw driver and a soldering iron. I hope this was helpful.

Posted on Mar 28, 2010

freelance-au
  • 131 Answers

SOURCE: I have a LCD TV SAMSUNG LNT5265F 52 and when I

Hi

A very common problem with these sets are bad capacitors that cause this problem.
If you are ok with electronics then remove the back from your tv and look towards the power supply.
Check the power supply for any Swollen or bulged capacitos on top, they may even leak a brown like liquid substance and are usually valued around 1000uf / 10v.
Replace any that you see suspect on the power board, I have fixed a lot of these and its fairly easy to do, I would however always increase the voltage of the new capacitors but ALWAYS keep the same uf.
Lets say 1000uf / 25v

Please comment and rate if this helps.
Thanks


Posted on Apr 07, 2010

  • 2318 Answers

SOURCE: My LG Plasma 42PC3D turns on and off repeatedly. I

Your plasma TV has a power supply 6709900019A. These power supplies failed due to defective capacitors. See the picture below and check the capacitors mark with the red lines. There are 10 capacitors that should be replaced even if they do not show signs of bulging/swelling on top.
The value of the capacitors is 3300uF/10V but you can use 25 volts as long as they fit in the space provided by design.


4c29d64.jpg

Posted on Sep 24, 2010

  • 8457 Answers

SOURCE: High voltage snap when set is turned on in the

U have tools like a soldering iron,desoldering pump or desoldering braids,solders?Can u do basic soldering and know basic electronic.Check the power supply board for dying capacitors,these capcitors alway bulges up on it tops or puffing up on it tops.These capacitors are leaking gases and dying.Replaced these capacitors are bulges up on it tops or puffing up on it tops.The tv,power will be stable and power on wright away.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Posted on Oct 18, 2010

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I had a similar problem. I had a 52" RCArear projection tv. It would do this when I initially turned on the television, but then after a few "on/off, on/off, on/off" cycles it would stay on. Eventually it started doing it more; until finally there was a spark and that was it. The tv was dead.The bloggers called it "the blinking green light of death" (because of green light on the panel).The power board is going out.ALSO holding down the Input and Menu buttons afterward will give you some diagnostic information via 2 sets of blinking indicator lights.

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-----------------------
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