Samsung Syncmaster 223BW - blank screen..

[Davi.p]

Re: Samsung Syncmaster 223BW - blank screen..

Perhaps 10 minutes is not enough time to look?

What do you want to say?
I've searched all them with alldatasheet.com and after with yahoo

I believe
A21SC is an eeprom 24c02
...

How do you found them?

Datasheets are available for all?

??

[selldoor]

Re: Samsung Syncmaster 223BW - blank screen..

24co2 is at digikey data sheets available

Sorry I have been a bit busy and will be for a few weeks

http://www.digikey.co.uk/product-sea...980?k=%2024c02

24co8 is at digikey data sheets available

http://www.digikey.co.uk/product-sea...980?k=%2024c08

[Davi.p]

Re: Samsung Syncmaster 223BW - blank screen..

But you say that A21SC is an eeprom 24c02.. i don't see it in alldatasheet...

[cathary]

Re: Samsung Syncmaster 223BW - blank screen..

Hello guys.

Has anyone troubleshoot the logic board?

All I'm going to write is just what I read online, nothing is tested.

Reading different forums, I saw that most of the techs (including me) are trying to find a faulty electronic component. Nothing bad till now, but not all to accomplish the final job.

Reading some polish/russian forums (using google translate), I realized that I overlooked the bios (firmware) role. Itself, the firmware might be responsible for this kind of situation.

There is a .*bin file (arabic forum) that can be rewritten in the flash memory. This procedure is called, from what I understand, "dumping eeprom".

There are some SPI FLASH programmers and dedicated software, like RT809F High speed USB programming unit BIOS programmer, that can do the job. This is just an example.

If someone has the possibility to test the file, I'll be more than greatful.

If anyone else has a different oppinion or way of working, please share it .

[neuralnet]

Re: Samsung Syncmaster 223BW - blank screen..

Hi Cathary, thanks for the suggestion. EPROM corruption was suggested by Davi.p but I don't have access to a reprogrammer.. maybe it's time to invest in one..

[spuzzum]

Re: Samsung Syncmaster 223BW - blank screen..

Hi Cathary, thanks for the suggestion. EPROM corruption was suggested by Davi.p but I don't have access to a reprogrammer.. maybe it's time to invest in one..

Do a google for 24cxx eeprom programmer, and make one yourself.. cost like $5 in parts, and it's a pretty simple circuit. There's even a 4-pin socket on the board that I'm betting is for programming.

But from what I've been reading.. you can dump and flash the chip directly from the desktop. Here's a post from a thread where somebody wrote a fixed eeprom back to his monitor with a GUI...

http://ubuntuforums.org/showthread.p...1#post12002011