Question about Samsung Televison & Video

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My Samsung LED tv (UN46EH5300) bought 2 years ago is powering itself off and turning back on. Just before it does this it becomes not responsive to the remote. Smarthub wont come up and it wont allow

Reboot with a samsung phone representative. Made sure timers were not set. Made sure auto power off was not turned on.

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Had this too. I found that I had accidentally plugged a cat 5 cord into two ports of my router (like a loop). As soon as I unplugged the offending cat 5, TV quit powering on and off. Fixed it.

Posted on Jan 02, 2015

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Fault with 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.

Posted on Dec 12, 2014

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Magnavox 50" plasma Won't Power on/Shut's off/Blinking red LED

The above fix, listed by Tom saved us!! We did as instructed and took off the back of our 50 inch Magnavox plasma tv. We were not sure what we were looking for so we googled capacitator (image) & there was a photo of a fried capacitator! Sure enough we noticed ours were "fried", we took out the board and went to an electronic supply store, bought the 2 capacitators ($2.00 each!!) and then found someone who did tv repair to sauter the new capacitators onto the board. (It is important someone who know how to sauter and recognizes polarity do do this for you) All in all we fixed this following the above instructions for $34.00 and our time. For a month we were told to spend hundreds getting a new power board!
Kudos to you Tom & thanks so much!!

Posted on Feb 02, 2009

sewright34
  • 8 Answers

SOURCE: won't turn on

These units have a separate switching power supply that does indeed get very hot. What I have found is that a 1000mF@25v capacitor goes bad in the power supply and needs to be replaced. If your set's red power light turns green for just a second and then turns back to red without the set turning on, this may very well be your problem. You can either try to find another power supply (make sure it's rated at 12v-5amp) or take your old one to a repair shop. Be very careful if you decide to try a repair yourself, switching power supplies can pack quite a punch.

Posted on Jun 27, 2008

  • 1 Answer

SOURCE: samsung s42sd-yd01 plasma television wont power up

i have also this problem 1 relay klikt than must klikt the second relay it do nothing
i see a few elco,s on the visibel boards who are dik the plastik is dik not the metal
to hot maybe
can this give the problems
somewone a solution for this tv ??
sorry for my bad englis
thanks

Posted on Aug 13, 2008

gsalmen
  • 77 Answers

SOURCE: lg tv automatically turn on and off. Power surge

the software in the main control is damaged. call your lg servicer in your area. he might get you a software update

Posted on Jul 09, 2009

  • 1 Answer

SOURCE: Samsung LCD tv - Turns on and off by itself.

Not sure if this is the same problem, but I just moved and set up my Samsung 40" LCD and it has been going off and on by itself with the worst yesterday every 2-3 minutes. After speaking with a friend of mine who is not in the Tv business but just has good common sense, I determined it was likely a bad power strip. The bottom line is I replaced the crappy power strip (which was fully loaded with all 6 outlets in use) with the higher quality one I had in the other room. The problem is gone. I suspect the power strip was failing or real bad quality........try plugging the tv directly into the wall outlet first. hope this helped.

Posted on Sep 18, 2009

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