Bugfix for #1024 (gsm modem re-camping) done

Ed Kapitein ed at kapitein.org
Sat Aug 22 10:03:35 CEST 2009

Hi Rainer,

Thanks for sharing your work with us.
Why did you put the capacitor on the right hand side and extended it
with the yellow wire?
The wire might pick up a signal and cause other trouble.
There seems to be room to fit the extra capacitor on the left hand side,
between the two black IC's.

What form factor does the capacitor have? do you have a link to a
reseller of the capacitors?
I am thinking of doing something similar too.
Kind regards,


Fox Mulder wrote:
> Hi all,
> today i did the rework for bug #1024 to my freerunner. First i tried to
> remove C1009 and replace it with a 22µF capacitor but i had no luck
> getting it off the board with my tools. Maybe it was glued to good and i
> have no smd tweezer iron to heat up both ends of C1009 at the same time.
> So i used the solution where i added a 10µF capacitor parallel to the
> existing one. My rework is based on [1] by Dieter Spaar.
> I documented my rework process with a few pictures available here [2].
> Now i only need a reliable testcase where i can see if the rework helped
> or not. Is there any scenario i can try to find out if #1024 is fixed or
> not?
> Ciao,
>      Rainer
> [1] http://lists.openmoko.org/pipermail/hardware/2009-May/001192.html
> [2] http://quakeman.homelinux.net/bugfix_1024/
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