Question about Samsung LCD-TV LE40S81B 40 in. HD-Ready LCD TV

1 Answer

Startup takes hours, help?

Not able to turn on, just blinks it's red light and makes a clicking noise every few seconds. It also makes a high-frequent noise coming from the SIP400B-AUO, whatever that is. After approx. 5-8 hours doing this, it turns itself on. And works great when it finally starts up. The problem started a few weeks ago - took 10 minutes or so to power up. Then half an hour, then even more every time until I've stopped trying. I've opened it up and looked for obvious parts that have failed, but seemingly nothing. I do not know much about TV's so I just looked at the capacitors, and they're all intact.

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  • marie_gradin
    marie_gradin Dec 18, 2012

    I went over the components once more, this time I found a bit of rust, or rust-like bit on one of the copper-wire thingies. I scratched it off, and turned the TV on. It works! I also found that the problem is because of the cold (living in norway), it now takes about 5 minutes to warm up before starting, unless I heat it before powering on. Great success!

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  • Samsung Master
  • 14,553 Answers

The clicking suggests a power supply issue, a old trick I use in cases like this is a hairdryer, Try to heat (don't melt things) different boards carefully until you get a dramatic reaction, considering the brand which I do not like much less endorse, what is there to lose.

If you pinpoint the issue to one board try to locate that board.

Posted on Dec 12, 2012

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SOURCE: Samsung LCD TV doesn't power on, just blinks 5 times

After about 5 years the Samsung LCD televisions backlight fails which prevents the TV from coming on and the powerlight just flickers the backlight can be changed but it is often alot easier and cheaper to buy a new Television

Posted on Sep 23, 2009

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SOURCE: Power won't come on- constant clicking loop instead

My T.V. did the same thing and it was due to bad capacitors on the power supply board. the tops of the capacitors were bulged, once replaced it worked fine. It involves sodering in new capacitors total cost $30. that includes buying the sodering tool. Keep looking around on line someone had pictures step by step how to do it.

Posted on Nov 23, 2009

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SOURCE: Samsung LN32A330 turns itself off after 5-10 minutes of being on.

its usually the 2200 microfarad cap on the power board that stops working. its really easy to replace and its only a 5 dollar repair part. use a 2200 mF cap rated around 25 volts instead of the usual 10 volts. samsung is famous for bad caps. if the cap feels buldged than this is the problem

Posted on Mar 30, 2010

tvtek
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SOURCE: My Samsung T5271F is taking

You have failing capacitors on the power supply board. This is a very common issue with these and others. If you know how to test capacitors and solder its not that tough to repair. Or you can just replace the power supply board which is part number BN44-00184A and runs around $100. You can purchase the board at many places on line. Just do a search in Google with the part number,,,,Good luck

Posted on Sep 18, 2010

SuperTech-11
  • 1591 Answers

SOURCE: icked@netscape.netI've got a UN55B8500 samsung

There's a good chance you have failing electrolytic capacitors either in the power section or the inverter section or both.
Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it off and on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for some time and then try again.

If you aren't tech savvy, don't worry, read the rest of this solution and watch the videos.

If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering, and even then, you should go OVER, not under the uF rating).

Most of the caps that go are 10V 1000uF or 3300uF.

I found some great videos of the procedure (for many Samsungs with the same issue) on youtube.

http://www.youtube.com/watch?v=Mm51C_RDIZE
http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related
http://www.youtube.com/watch?v=8l0AUj8QUkg&NR=1&feature=fvwp
http://www.youtube.com/watch?v=Y7b_nTaZYcU&feature=related

As you can see, this issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.

Posted on Jun 12, 2011

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