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Gerbil In Training
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Re: Samsung LCD TV - LNS4051 power on problem

Sat Jan 31, 2015 11:31 am

I have a Samsung Model LN40C530F1F that will not power up. The relay does not click. The red LED light just blinks when I attempt to turn it on with the remote. I pulled the cover and inspected the power board. None of the capacitors are bulging or leaking. I replaced the two 1000uf capacitors anyway but no power. Is anyone familiar with other components that can cause this issue?
Gerbil In Training
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Re: Samsung LCD TV - LNS4051 power on problem

Fri Apr 21, 2017 4:32 am

I have a different model but also a Samsung who has similar issues.

Unfortunately, mine is a bit older, and Samsung told me they couldn't help me because the warranty has been expired.

Have you found a solution for your problem because I would love to know what it is?
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Re: Samsung LCD TV - LNS4051 power on problem

Sat Apr 22, 2017 10:58 am

Not sure if I responded on this thread as it is an old thread that won't die.

I also have a Samsung 50" that was given to me years ago (CFL backlight) due to this same issue.

I was able to crack it open and replace 4-5 capacitors that were visibly bulged. The unit turned one 100% normal and worked great for about 3 years until now. It started doing the same thing over the past 4-5 months, slowly getting worse. Sometimes it would only take it 2 minutes to come on, now it takes it about 10. Once "warmed up" it can come in fine if turned off and back on.

It seems like a bad circuit design that allows for the capacitors and possibly other components to become damaged over time. But in my experience they can be replaced with a soldering iron, caps and a little know how. 30-40 minutes of your time and 5 bucks worth of caps.
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Captain Ned
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Re: Samsung LCD TV - LNS4051 power on problem

Sat Apr 22, 2017 11:58 am

It's threads like these, which has become a Net-wide resource to fix common problems, that proves the utility of the forum concept.

That said, back when this was a hot issue, I merged a whole lot of baby threads into this one.
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