Samsung LCD TV - LNS4051 power on problem

What you see is what you get, including photography, displays, and video equipment.

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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Thu Feb 21, 2013 7:26 pm

I happened upon this forum while trying to find an authorized service center for my LSN4051. It has been sitting idle on my kitchen table for 3 years. What a great site/forum!!! I read on how to fix the problem with the caps, opened the back of the TV and found the 4 caps in question, and yes, they are bulging and leaking. After reading some of the posts and finding some folks had trouble initiating the repair, I decided to read on. Then I found the posts referring to the class action against Samsung for this very problem. I read the report and decided to call Samsung at the number listed. They are sending a service person out in a few days to fix the problem AT NO COST!!!! Thank you so much to all the folks who post here. This is a life saver. I bought a new Samsung 52" LCD (for $1400.00), but it will be nice to have this set fixed and in the den as a spare. Thanks again!!!
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Fri Feb 22, 2013 7:41 am

I did just the four typically recommended and it didn't entirely solve the problem. So I went back and did the remaining two. Now the set is working fine. No longer taking forever to power up, and no longer losing video when it's been on for a while.

Gotta love a $12 fix instead of trashing the TV!

Thanks for the info folks!
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Fri Feb 22, 2013 4:39 pm

You saved me people !!

I just have one comment, when i opened my Samsung LCD and checked the power card the capacitors look physically fine? , no plug? , no black liquid?
However and because my LCD wont power on I changed all five capacitors, and it works like a charm !!
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Samsung 46" LCD TV No picture!

Postposted on Fri Mar 01, 2013 6:05 am

Hey guys my Samsung tv is being funny with me by allowing sound but no picture.

Could this be something serious or would it be a simple.

I'm open to suggestions on testing it further etc.
Model code: LE46M53BDX/XEU

Cheers in advance for any help :D
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Re: Samsung 46" LCD TV No picture!

Postposted on Fri Mar 01, 2013 7:50 am

Assuming you can't even get an on-screen display, it's likely to be blown capacitors (a pretty common fault for these).
There's a forum thread about it somewhere around here that will probably show up in a search.

You also want to read this too!
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Re: Samsung 46" LCD TV No picture!

Postposted on Fri Mar 01, 2013 8:09 am

Merged into main Samsung TV thread.
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Samsung 40" LCD TV (LA40B530P7XXA) problem

Postposted on Sat Apr 06, 2013 2:12 am

Hi, can anyone give guidance?

My Samsung 40" LCD TV (LA40B530P7RXXA) intermittently changes input source without any command to do so. Using the remote or buttons it is possible to reselect the ensured input source, but the source only remains selected for a temporary period lasting anything from a few seconds to up to 15 minutes.

This problem suddenly started yesterday after many years of problem-free enjoyment. Our domestic cleaner (who is technologically un-educated) was in yesterday and I was wondering if she may have accidentally pressed some buttons that could have invoked some demo mode or something similar? The erratic timing of this problem however suggests some other cause.

Can anyone advise?
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Re: Samsung 40" LCD TV (LA40B530P7XXA) problem

Postposted on Sat Apr 06, 2013 6:11 am

Merged into main Samsung thread.
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Thu May 23, 2013 5:02 am

I noticed this issue when I'm trying to watch a movie with 3d subtitle and this required me to use the .ass subtitle format, which required using transcoding.
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Thu May 30, 2013 2:14 pm

spagzone wrote:Anyone have problems with controls on side of TV after replacing power board.
Replaced mine twice, after 2nd time the tv controls no longer functioned, along with the remote.
Sound is slightly low, and cant volume up or down. As is power on off button.

Any help would be appreciated.

PS...The 2 times I replaced board, I only swapped 2 capacitors to the next higher voltage.
I'm thinking of swiping all 5 to see if that solves control problems.

Thanks again

Ross

I'd the same problem dude. But I took my monitor for warranty and they fixed it :-)
If you have warranty then you must take it to them , they should fix it without any cost.
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Wed Jun 05, 2013 7:05 am

hello

I have another problem with my lcd.
no blown capasitors ,i have sound and image but no backlight.
In the darks i see some movement en sometimes some subtitels.
i'm hotwiring the 5v like say here but no backlight.
So i removed the tcon board and see a liltle brown spot on de other side of the board on the maxim ic.
Could this be the problem of the faillure of the backlight or have the t-con board nothing to do with the backlight?
If so where can i find a cheap t-con board?

grts ,
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Mon Jul 08, 2013 6:15 am

Hi,

Another newb with a TV problem! I have read a lot of this thread but haven't come across a solution to my problem.

I have a Samsung TV that will power up and display a picture but after a short while the TV switches off again. The power supply inside the TV makes a buzzing, crackling noise which get louder until the TV turns off. I opened the back of the TV and confirm the buzzing is definitely coming from the power supply. If I leave the TV on the black "No Signal" screen it will stay on for about a minute. If I put a white static image on, the TV almost instantly switches off. I bought a replacement power supply from eBay but it didn't fix the problem. It could be that the replacement power supply is also faulty as it makes the same sort of buzzing noise.

So what do you guys think? Is there something else I should be looking at? Or do you think the replacement power supply is a dud too?

I would really appreciate any advice given.

Thank you.
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Tue Jul 09, 2013 12:58 pm

lovelyhead wrote:Hi,

Another newb with a TV problem! I have read a lot of this thread but haven't come across a solution to my problem.

I have a Samsung TV that will power up and display a picture but after a short while the TV switches off again. The power supply inside the TV makes a buzzing, crackling noise which get louder until the TV turns off. I opened the back of the TV and confirm the buzzing is definitely coming from the power supply. If I leave the TV on the black "No Signal" screen it will stay on for about a minute. If I put a white static image on, the TV almost instantly switches off. I bought a replacement power supply from eBay but it didn't fix the problem. It could be that the replacement power supply is also faulty as it makes the same sort of buzzing noise.

So what do you guys think? Is there something else I should be looking at? Or do you think the replacement power supply is a dud too?

I would really appreciate any advice given.

Thank you.


I would contact local Samsung retailer where the unit has been purchased and request a referral to a qualified tech. I had power supply problem almost 5 years ago once it was replaced by a tech who knew what he was doing it has been working flawlessly until this day. If your unit is out warranty and I suspect it is Samsung retailer may actually decline to provide a certified/qualified tech believe or not. They declined me even though I said that I would pay out of my pocket. I just grabbed a newspaper and found a TV repair dude in classified section he actually did a decent job.

Good luck.
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Mon Sep 16, 2013 9:13 am

Thought I would post this here since this thing is 33 pages long it is easily missed:

Class Action settlement Page:

http://www.samsung.com/us/capacitorsettlement/

number:

1- 888-899-7602

I just called and got the ball rolling to get my free repair on my 2008 model LN40A550
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Tue Jan 14, 2014 12:43 am

Hello!

I have replaced my power supply board and main board on my Samsung LN-T4669f TV and checked all the connectors to make sure there seated well. my TV will come on fine then after about 15 minutes the picture will start flashing around screen, then lines on screen, then the TV will turn off or sometimes display a green garbled screen, backlight appears to work fine, have a frame rate board coming in mail to replace but do not think it will fix problem. Problem started with the old capacitator problem then got progressively worst. When I first had the power off, clicking problem I had to leave my TV on for a month so I could watch TV. It would take sometimes a day for it to turn on. Then it stopped turning on completely until I replaced the power board so I think I screwed something else up. UPDATE:I put a frame rate board in TV and low and behold it worked. Now have a TV, it cost about $120 for all 3 boards on EBay.
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Fri Jan 24, 2014 10:45 pm

Hello,
There are quite e few capacitors on the PS board of LA46F81BD, can someone please advise which capacitors need to be replaced?
Many thanks :-?
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Mon Jan 27, 2014 6:26 am

JOAT wrote:Hello,
There are quite e few capacitors on the PS board of LA46F81BD, can someone please advise which capacitors need to be replaced?
Many thanks :-?



The bulging or leaking ones.

any number of these pics show you what to look for
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Sun Feb 16, 2014 7:45 am

Hi,

We found the clicking/not turning on problem too - we have replaced the two 2200uF capacitors as suggested as these had blown. All the others appear to be fine - however the issue persists. Relay is clicking on and off, red LED on the front is still blinking.

Does anyone have any other suggestions on things to try? We don't have a receipt so can't contact Samsung for a repair and it seems silly to pay £100+ for a repair on a TV this age.

Many thanks,
Will.
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Fri Feb 21, 2014 10:50 am

I have the same on off cycle problem. I changed the capacitors even though they looked fine. TV worked for a day, then the problem started again.
This time I changed the Whole PSU, again TV worked for a day, and the on/off cycle started again.
Any furthest suggestions would be great!

Thanks
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Sat Feb 22, 2014 6:10 am

Dimwit wrote:This time I changed the Whole PSU, again TV worked for a day, and the on/off cycle started again.
Any furthest suggestions would be great!


Unless you know for sure what the exact problem is, and that spending your time and money on repairs will definitely fix it for the long-term, just cut your losses and junk it.

TV's are made out of very cheap parts, but replacing some of them (because they're bespoke) costs an arm and a leg.
Just buy another cheap TV before the root defect causing all your caps to blow costs you more than the a whole new TV.
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Sat Feb 22, 2014 6:52 am

I think you are most probably right! Shame though it is!
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Re: Samsung LCD TV - LNS4051 power on problem

Postposted on Mon Apr 07, 2014 3:30 am

Know my parents had a simular issue, we all had a look at it and looks like had similar conclusion in the thread.
Couldn't get it sorted unfortunately. Next time i went round they had it all done, but had sent it to some repair center i hadnt heard of before.
Dont remember them complaining about the price, but sometimes these places stock alot of the components.
Might be worth a quote
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