Samsung PS50A450P1

[mkhuzanie]

After greeting
Samsung Plasma Display
model : ps50a450p1
model code ps50a450p1sbw
Smps: DYP-50W3
Main board: BN41-00984A
Fault; Standby red light
ST5volt is ok
Run self test with out main bord is OK
I chek volt is ok . when run self test ,Vs 208v & Va 56v OK
What are your suggestions for the problem , thank you

[Hamie]

Re: Samsung PS50A450P1

You have a faulty mainboard.

Don't understand what you're asking. You've answerd it yourself.

[mkhuzanie]

Re: Samsung PS50A450P1

When plugging in the power plug
The screen only lights a red LED
RELAY does not work
The problem has been limited to the main board
why the main board does not give a pulse to the SMPS
Thank you

[Hamie]

Re: Samsung PS50A450P1

You said you ran a self test. Ie: ran test patterns on the logic board??

[Hamie]

Re: Samsung PS50A450P1

Or do you mean you just jumped the power supply on?

[mkhuzanie]

Re: Samsung PS50A450P1

i make both jumped the power supply
and ran test patterns on the logic board
and the display run red & green & blue color
This is what i did

[tvtimmy]

Re: Samsung PS50A450P1

The mainboard is bad.

[mkhuzanie]

Re: Samsung PS50A450P1

Impossible to be diagnosed for repair
Thank you for your response

[ReeceyBurger123]

Re: Samsung PS50A450P1

A dildo is causing the fault not mb

[mkhuzanie]

Re: Samsung PS50A450P1

Thanks for your response
what does it mean A dildo is causing the fault
Is it possible to explain
thank you

[mkhuzanie]

Re: Samsung PS50A450P1

A dildo is causing the fault not mb

Thanks for your response
what does it mean A dildo is causing the fault
Is it possible to explain
thank you

[mkhuzanie]

Re: Samsung PS50A450P1

I am waiting for your comments >

[mkhuzanie]

Re: Samsung PS50A450P1

the B3.3VD not come out

[dskall]

Re: Samsung PS50A450P1

Are you getting signal from PW_CNTR1

[mkhuzanie]

Re: Samsung PS50A450P1

The check voltage was examined on IC Q1003 and indicated as follows

1- 3.37
2- 0
3- 3.37
4- 3.37
5- 3.37
6- 3.37
7- 0.555
8- 0.555

What the volt is supposed to come from PW_CNTR1

Thank you for your response

[dskall]

Re: Samsung PS50A450P1

You said B3.3VD, but it is A3.3 from pw_cntr1 not outputting. Looks like it should have 3.3v to pin 2

[mkhuzanie]

Re: Samsung PS50A450P1

the pin 2 is good come from pw_cntr2
but the important line (red ) is come from gate pin 4 pw_cntr1
What are your suggestions sir
Am I checking out a different place?
From where should I begin to limit the problem
The problem seems to be standby
Thank you

[dskall]

Re: Samsung PS50A450P1

According to your readings pin 2 = 0v

[mkhuzanie]

Re: Samsung PS50A450P1

Is not it supposed to be pin 4 =0v