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My Samsung smart tv keeps turning on and off

My Samsung smart tv keeps turning on and off

Help my tv keeps turning on and off theres no damage to it at all


"@ladylou79 I looked this up earlier today because my Samsung TV started having problems turning on with the remote. Now for a while I could unplug it then plug it back in and the remote would start it. Now it's doing nothing. Seems like there is a class action law suit on them for this problem.

Samsung power defect causes some TVs to fail, and a class-action suit follows

A defective capacitor in some Samsung LCD, plasma and DLP TVs is causing the sets to fail.


I have not had the time to look up my model yet but it's a distinct possibility.

@oldturkey03 keeps up with this kind of thing and may even know the cap to replace ;-) Let's see if he'll tell us.

I'll update this later as i garner more information.

UPDATE 4/15/17

It has a red light in the lower left hand corner. No power on button. The remote stopped working. For a week or so you could unplug it, then plug it back in and it would turn on with the remote. Now it won't turn on at all. You unplug, the remote will blink the light once and nothing. Opened it up, could not find any noticeable bad caps. All the reports will say is that Samsung sometimes sends a tech out to replace two known undervalued caps. But i can find nothing so far that will tell me which ones. I really don't want to play the game with them and spend hours on the phone just to be treated like I don't know what I'm talking about, then finally have them acquiesce and do something. I'm happy to just spend ten minutes and repair the damned thing. I just want to know what caps need to be replaced before my blood pressure gets over 200 and i blow a cap.

My model # LT28D310NH

Looks like you have to do the dance with Samsung, play the game, let them pretend they don't know the problems, get you to change batteries.

If you persist long enough they may send a tech to change two capacitors.


"@ladylou79 ,Lou, Samsung has had a few issue the manual button switch panel, power supply board bad capacitors or main logic board faulty,all of which can cause TV on off issue. See links below to see how to diagnose this issue. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.



I am not into taking things apart. I did unplug the TV for 15 min. , then replugged it. Made no difference! Then, I decided ( since nothing else was working) , to unplug cord from back of TV. I then proceeded to dust the back , especially around the connectors . Surprise! It worked! So far, so good!

Unplug the wireless adapter. It seems to me the wireless adapter is telling the TV to switch to the smart hub but can't so it cycles on and off

I replaced logic board on my UF75F6300AFXZA BN4400621C. Worked for 1month then started power cycling again. Got a power board fix on eBay that changed capacitors. Worked for about 2 months. I contacted the repair service from eBay, and they told me to reverse the cable that connects the logic board to the power board. It worked for about 8months. Now the power cycling is back. I find that if I hit the tv in the back a couple times, it stays on, but will occasionally turn on and off. No more samsung televisions for me.

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