Samsung Plasma PN60F5300AFXZA

[landyboy]

I picked up a 60" Plasma seller said stopped working after storm.... Nothing visible on any of the boards. Does not power on. I do have 5v standby voltage at thee input to the Main Board. I have read where one of the EPROM's on the main board is a known issue??

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

Is there a way to force the set on to isolate to the main?

[tom66]

Re: Samsung Plasma PN60F5300AFXZA

These units do not have the "EEPROM" issue that affected 2008/2009 Samsung sets.
Since your set has an integrated control board (built onto the main board) there is not a great deal you can do to test this.
If you have established 5V stby but no activity from main board, e.g. not toggling the PS ON line to the power board, you will have to replace the main board first. I am assuming you do not know about diagnosing a main board as it is not a task for a beginner.

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

Your assumption is correct. I will order a main board and start there. Thanks!

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

A few places advertise a replacement IC EEPROM for IC801 as a fix for these boards. Any way to test or jumper the IC801 to check to see if it is the issue? Or is this bad info?

[tom66]

Re: Samsung Plasma PN60F5300AFXZA

not an EEPROM. It's SPI NOR Flash.
But no way to "jumper" it. Just need to replace it if it's the issue.
Nothing else you can do to test it without detailed knowledge of how these work unfortunately.

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

Thanks, I ordered one lets see what happens.

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

OK that did not work. Could a bad YSUS board cause this condition?

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

I also want to add that I do not have a standby light in the front of the TV at any time.

[R_J]

Re: Samsung Plasma PN60F5300AFXZA

do you have any voltage on the PS-ON pin on the power supply, monitor the pin then press the power button to see if there is a change.
If you are getting a change on pS-ON, disconnect CN802 and moitor the VS pin, does it have any voltage? It won't sty up due to OVP, to test it you need two 60watt incandescent lamps connected in series across VS & ground to act as a load.

To test part of the power supply (not the VS supply), disconect CN801 from the main board and check the voltage on PS-ON (pin1) if there is 0 volts, connect a 1k resistor between 5v stby and PS-ON, If there IS 5 volts on PS-ON, then ground PS-ON. see if you get D15v or D5.3

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

Voltage on PS-ON 2.8V No Change when power pressed. Pulled CN801 4.2 volts on PS-ON Grounded PS-ON and got 15v on D15

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

Would this indicate a good power supply and possibly a bad Main?

[R_J]

Re: Samsung Plasma PN60F5300AFXZA

I could be, the main is what controls that pin so either something on that control line. You said you replaced th spi flash chip so I don't really know what else it could be.

That other spi ic IC2001 is for a different version of the board

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

Yes i saw that as well but I could not locate ton the board either. I guess I will try to find a mainboard and see what happens.

[R_J]

Re: Samsung Plasma PN60F5300AFXZA

where did you get your flash ic? maybe you have the one for ic2001 and not ic801, is that possible?
on this board ic2001 is above the crystal

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

I order it from shop Jimmy verified it is the IC801

[landyboy]

Re: Samsung Plasma PN60F5300AFXZA

Follow up. Ordered main board it fixed the problem.