samsung 32" LN32A450C1DXZA won't power on immediatley

[ful]

I've had the Samsung tv for about 5 years and for the past several weeks, I've had problems powering on the tv.

There's a standby red light, and it wil eventually power on, but it seems take a while for it to warm up before the light starts blinking and powering on...I never had this problem before.

I have to keep pushing the power button til it eventually comes on...takes several minutes.

I thought that it might of have something to do with way my system is all connected (tv, laptop, stereo) via hdmi cables, but i unplugged everything from the tv, and the problem still persists.

Is this a bad capacitor from the power supply going out?

[budm]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

https://www.badcaps.net/forum/showthread.php?t=39740

[ful]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

Sorry, I'm sure a picture will help, but I'm trying to get away from taking it apart right now.

Can you just give some advice on what you think it is?

I will try and take it apart some time this week...thanks.

[budm]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

It can be as simple as bad caps in the power supply.

[ful]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

Does it seem strange that it turns on after warming up?

[budm]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

No, not at all, the ESR of the capacitor will go down when the temperature goes up which will make the circuit function again. Bad cap can look normal but can have high ESR.

[ful]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

Is this a common problem wit Samsung tv's or lcd tv's in general?

How long are capacitor's supposed to last?

I'll post pics after i take it apart...thanks.

[budm]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

Common to any electronics (no matter what brand) especially in the high frequency switching power supply circuit. The cheap Chinese made caps will usually last until the warranty runs out.
http://s807.photobucket.com/user/bud...?sort=3&page=1

[ful]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

In my initial post, I left out the fact that it's very difficult to turn the tv on with the remote.

I have to push it several times until I see a red light blinking which indicates it's powering on, but when I push the power button, the red light doesn't always flash, and when it does, it only blinks once and doesn't come on again...does this indicate anything?

Also, would a factory reset make a difference?

[zdsh07p9]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

I just fixed a set like this I believe (maybe even the same model number). Also take the power supply out and look behind it - mine had a burn mark behind it.

[zdsh07p9]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

And what you just said points to capacitors (in my eyes). But Budm is teaching me so take his advice

[ful]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

Okay, thanks...I'll definitely take it apart tomorrow and post pics.

Had a cold spell here last night dropping to mid 30's and it took me like 20 minutes to turn the tv on...had to resort to warming it up with a heater for a while.

[zdsh07p9]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

stay warm

[ful]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

I'm trying to take my tv apart right now, but I'm having some difficulty.

The back case wants to come off, but is stuck under the jacks panel as if I've missed something.

The entire case comes off except for that bottom corner with all the jacks.

Did I miss a screw, or do I have to push or pull on a tab or something?

[kasfamily]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

use

[budm]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

@ful. there should be at least one screw on the input jack panel by the RCA jacks..
http://s807.photobucket.com/user/bud...?sort=3&page=1

[ful]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

Man, I need to get glasses...stared at the screw for 5 minutes and couldn't see it.

Finally got it apart, and there doesn't seem to be anything obviously wrong.

The capacitors look fine...not fat or bulging.

The only thing I found was some brown staining or burning on quite a few blue disc shaped things.

I took video also, and lots of pics and let me know if you need more...thanks.

[budm]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

I see one domed top in this picture, the last one on the right with brown stain on tp:
https://www.badcaps.net/forum/attach...7&d=1410731092
https://www.badcaps.net/forum/showth...374#post483374
So you should do the whole set.
As you can see in my pictures, if one is bad, the other will go soon. Good cap can look normal.

[ful]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

The second link you gave doesn't go anywhere.

In the first link, are you talking about the one on the far left, not the bigger one out of the four?

But, I should replace all 4 of these?

[ful]

Re: samsung 32" LN32A450C1DXZA won't power on immediatley

Okay, got my magnifying glass, and I can see it now.

So there's nothing to worry about the stains on the blue shaped discs?