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Last edited by Davi.p; 12-14-2013, 06:33 PM. -
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
Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: Samsung Syncmaster 223BW - blank screen..
But you say that A21SC is an eeprom 24c02.. i don't see it in alldatasheet...Comment
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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
.
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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..Comment
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Re: Samsung Syncmaster 223BW - blank screen..
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#post12002011Comment
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Hi I am new to this kind of repairs but I want to learn..I have a Samsung UN65JS8500F. the TV used to work and I tried to fix darker areas in the middle only ( img 1,2,3). I thought the led strip were bad..not the case. I did not research in advance what kind and where the LED were located. In this model they are located vertically on right and left side. Took the TV apart and put it back together. Now the tv shows no welcome screen and no sound is available thru the speakers. ..just a black screen..Backlight LED do turn on...also noticed a 5 blink code , not sure if that was there before. I can... -
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I put the screen back in place & turned it back on . The screen seemed to be ok again but different screens on the same... -
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HI guys!
I've got a Samsung LH82QENELGC/EN with a problem and need some advice and I hope this is the forum to use?
I'm from Norway so I'd like to apology in advance if my description of the fault is kind of simple or the names on the components are way off. 😊
the TV is powering up, working as normally and picture is all good, except a 1.5-inch-wide vertical line of snow/static across the screen.
This TV is a Signage Display/Public Display version and it's been used at my work for 4-5 years showing commercials 24/7. The fault occurred when... -
Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!
My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.
This time the original cable broke too close to the screen, it can't be fixed without tearing the screen...
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