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I have a 51" samsung plasma TV that keeps turning on and off while watching.

I replaced the Main board, and that didn't fix the problem. It turns on and off in increments of 8 seconds approx. 5-10 times. It goes completely black and the samsung logo comes on, then it'll stay on for 10-15 mins and does it again. This Tv is only 2 years old as of Feb.

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Fault to the main power supply regulator section. Either it will be a separate board, or the part of main 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://electro-medical.blogspot.com/
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 Mar 06, 2016

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Posted on Jan 02, 2017

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Samsung plasma PN51F5300 turns on and off itself


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1 Answer

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