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SAMSUNG Power problem LN40A530

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benitos

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Jun 16, 2011, 1:16:53 PM6/16/11
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Hi having a SAMSUNG LN40A530P1 television that takes very long time to
get an image /sound.

After checking the capacitors on the power supply board , there is no
"pop-up" on the top and they all mesured good (value & ESR).

I check on the web and many people are talking about the 1000uF/10V
that are border line , should be rate at 16V instead of 10V but
again , they seem to be good.


Any idea ?

abrsvc

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Jun 16, 2011, 1:59:26 PM6/16/11
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GIven the smal cost of the replacements, I would change them anyway.
Keep in mind that parts can test fine when not under load. Use 16V
caps rather than the 10V ones too.

Dan

hrho...@att.net

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Jun 17, 2011, 11:28:24 AM6/17/11
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has the set always been slow?

benitos

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Jun 17, 2011, 11:44:24 AM6/17/11
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no , it's getting worst with time

Plai...@yawhoo.com

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Jun 17, 2011, 3:37:51 PM6/17/11
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On Thu, 16 Jun 2011 10:16:53 -0700 (PDT), benitos <pot...@cae.ca>
wrote:

It may not be a problem with the power supply itself. Most TVs have a
mixture of LDO analog and bucking (PWM) regulators on the main board.
This might be a bad LDO regulator, but it's far more likely that it's
a bad cap on the output of a bucking regulator.

PlainBill

benitos

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Jun 18, 2011, 10:50:26 PM6/18/11
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On 17 juin, 15:37, PlainB...@yawhoo.com wrote:
> On Thu, 16 Jun 2011 10:16:53 -0700 (PDT), benitos <poth...@cae.ca>

Are you talking about the board with all the input RCA jacks , doesn`t
seem to have any caps on this board.

Or is it the board with all the connections for the LAMP .

On this unit , there are the power supply , input and inverter board.

Thanks

Plai...@yawhoo.com

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Jun 19, 2011, 4:25:15 PM6/19/11
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On Sat, 18 Jun 2011 19:50:26 -0700 (PDT), benitos <pot...@cae.ca>
wrote:

>On 17 juin, 15:37, PlainB...@yawhoo.com wrote:

Believe me, there are caps on the main board, and voltage regulators.
You may not recognize them, but they are there.

PlainBill

benitos

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Jun 20, 2011, 7:27:09 AM6/20/11
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On Jun 19, 4:25 pm, PlainB...@yawhoo.com wrote:
> On Sat, 18 Jun 2011 19:50:26 -0700 (PDT), benitos <poth...@cae.ca>
> PlainBill- Hide quoted text -
>
> - Show quoted text -

Main board means where all the inputs are (HDMI , RCA , etc...) ?

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