SAMSUNG Power problem LN40A530

B

benitos

Guest
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 ?
 
On Jun 16, 1:16 pm, benitos <poth...@cae.ca> wrote:
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 ?
Click to expand...
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
 
On Jun 16, 12:16 pm, benitos <poth...@cae.ca> wrote:
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 ?
Click to expand...
has the set always been slow?
 
On Jun 17, 11:28 am, "hrhofm...@att.net" <hrhofm...@att.net> wrote:
On Jun 16, 12:16 pm, benitos <poth...@cae.ca> wrote:

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 ?

has the set always been slow?
Click to expand...
no , it's getting worst with time
 
On Thu, 16 Jun 2011 10:16:53 -0700 (PDT), benitos <pothier@cae.ca>
wrote:

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 ?
It may not be a problem with the power supply itself. Most TVs have a
Click to expand...
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
 
On 17 juin, 15:37, PlainB...@yawhoo.com wrote:
On Thu, 16 Jun 2011 10:16:53 -0700 (PDT), benitos <poth...@cae.ca
wrote:

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 ?

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
Click to expand...
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
 
On Sat, 18 Jun 2011 19:50:26 -0700 (PDT), benitos <pothier@cae.ca>
wrote:

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

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 ?

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

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

PlainBill
 
On Jun 19, 4:25 pm, PlainB...@yawhoo.com wrote:
On Sat, 18 Jun 2011 19:50:26 -0700 (PDT), benitos <poth...@cae.ca
wrote:





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

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 ?

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

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

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

PlainBill- Hide quoted text -

- Show quoted text -
Click to expand...
Main board means where all the inputs are (HDMI , RCA , etc...) ?
 
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