Service Forum

[nypcdoc]

Hi Victor. I must say, what a great site!
In attempting to retrieve my password on my T30, I broke my SDA and SCL eeprom legs (LOL). I get an "eeprom not found" on the simple curcuit. I remember reading on previous posts about the possibility of replacing the eeprom being replaced.
I believe my circuit is good, so do you think the broken legs are my problem?
I try to connect it to what I can see to be the remains of the SDA & SCL pins, and I get that eeprom not found message. If I DO need to replace the eeprom, what are the steps I need to take (i.e. where do i get it from, how to replace it, etc). As a newbie, I'm happy I was able to even build the circuit -- but now, I want to have a successful outcome.
I've included pictures... please help

[victor]

The pictures ain't clear but looks bad around the SDA pin there.

If the legs are broken from the edge it's nothing much to do other than replace the eeprom.
There is a surgical way that consist in soldering 2 microwires on the two remaining legs and attach to the PCB traces, you can try

Else, when you'll get a good one, it will be our pleasure to help you to reprogram the dump.

Here is a clear picture of a T30 eeprom
http://www.allservice.ro/forum/images/t30.jpg

[nypcdoc]

Thanks for the info...How do I go about replacing the eeprom? Is there a special kind or model I need? Searching "24rf08 eeprom" on the internet doesnt really help much... Thanks for your help.

[victor]

Any 24RF08 8 legs should be good. You can use also PCA24S08 (Phillips)
Would be better to use a hot air station to dissolder/solder the chip.

I am really sorry for you, pal.

[syn805]

[victor]

The chip must be replaced with 24RF08 or at least PCA24S08.

Of course the original content or a dump from other x23 is needed.

I don't think x21 content will fit the x23 but there are %50 chances. try and see