Re: LED problem on samsung UE55F6475, 2 strips work. The rest is flashing every secon



Thank you for your answer!

That seems logical! The TV was bought new in 2013-14.. and was used until 6 months ago like 18 hrs a day atleast. So that something just snapped is probably likely.

But the two top channels are both 2 strip channels.. while the other 2 are 3 strips. So wouldn't the 2 channels with 2 led strips on them behave rather same? Why would samsung build it so the top one can tolerate more power? Seems like a strange design when u have...

Re: LED problem on samsung UE55F6475, 2 strips work. The rest is flashing every secon



Did I claim u said "if u dont want to help... etc.."

NO!

That was MY point, that if u dont want to help then just don't comment.

To write: Google it, even if u do it in a paragraph or two, comes off as a bit bitchy and pointless comment. U think anyone dont know google exist? So why say it ? Only one reason, to feel superior.
It's not like u said: Google these key words. That might have been somewhat helpful.
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Re: LED problem on samsung UE55F6475, 2 strips work. The rest is flashing every secon



Didn't I type very clearly in the OP that I didn't have any experience in this area? But advice from someone experienced is only as good as the advice itself.. and "search internet" is not really an advice.. its more a F U.

Atleast in this one you gave a link and some info.. but it seems like u didn't really read any of my post.

U didn't answer whats its a problem to test the strips by putting them on a working channel. It's seems quite logical...

Re: LED problem on samsung UE55F6475, 2 strips work. The rest is flashing every secon



I have read up on some of it.. but I dont have access to a LED tester.. have ordered one but that will take weeks. And I've also seem the use some batteries to test 1 led at a time. But given the collection of facts I dont think it's the LEDS, if it was why would they work when I change their position on the rail?
The problem must be on the rail or the power controller.

And moving leds I don't see the problem with?

If u don't have access to a...

Re: LED problem on samsung UE55F6475, 2 strips work. The rest is flashing every secon

Did some more experimentation.. I can't get the LEDs to light up but maybe it's my lack of knowledge.. I just did a simple serial connection at the end of 3 stripes, where they have +/- connections, and connected one end to the 270v on the connector that these 3 were supposed to go to, then I connected the - to the ground screw.

But the only thing that happened was a short weak flash of light from the first led on the chain every time I connected it.

Btw.. do these...

Re: LED problem on samsung UE55F6475, 2 strips work. The rest is flashing every secon

W8!!! I forgot one very important thing!!!!!

When I measured the voltage on the output led channels from the PCB, and I measured between + and - on the connector, I got the same strange jumping power readings as I got on some of the strip connectors on the rail. But when I measured between the + connector on the output bus and one of the ground screws on the corner of the PCB I got the numbers I mentioned above (about 270v on 2 channels and about 190v on the other 2 channels)
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Ok.. this is the story:
Have an old Samsung LED 3D TV (UE55F6475). First it started to lose light on the lower 40% of the screen now and then. Like for 10-60 mins and then it would work again. Then a bit later it just got stuck in that position. The lower 40% of the screen is dark, and it gets progressively darker the lower u go so it's obviously that LED strips where not working. I also looked for similar errors online and saw an exact copy and on that one it was faulty LED strips.

This is kinda how it looked, just that mine were at the bottom of the screen:

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Re: New Members - please post your introductions here

Hi!

Freddie from Sweden here! Grew up in a house that was located in my towns powercentral since my grandfather was chief electrician of it. So I have always had some basic electrical knowledge in life even though my life was more focused towards computers.

I have too much different equipment to list.. im interested in both electrical repair and machining.