[olpc-help] RTC Battery
Richard A. Smith
richard at laptop.org
Wed Jun 4 15:54:54 EDT 2008
Caryl Bigenho wrote:
> I have hunted all over the wiki and forum for instructions for
> de-bricking. I noticed you posted a good set on the OLPC forum back in
> Feb or so. That is why I am asking you...
> 1) Where on the wiki or anywhere else is there a picture of the RTC
> battery or a schematic showing exactly where it is located?
Dunno. Mel and SJ did something like this. There was talk of doing
some sort of image map but I don't know if its up on the wiki.
> 2) Where can I find a serial/USB adaptor that I will need to complete
> the repair? I thought I had one that would work, but after seeing the
> ones on the wiki, mine looks nothing like those!
The official one is custom and you have to get it from us and we have a
a limited supply. I'm got it on my list to get one added to stock
But any 3.3V TTL to rs232/USB will work.
> 3) Did I read that this can be done by soldering instead? That might be
> easier than trying to find the right kind of adaptor.
Sure if you remove the SPI flash and solder on a new one or pop it in a
programmer and re-program it with firmware that does not page fault on
bad RTC data. You need to be familiar with SMT rework and have the
Richard Smith <richard at laptop.org>
One Laptop Per Child
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