GTA02 C4110/1 replacement?

Al Johnson openmoko at
Tue Sep 9 00:10:58 CEST 2008

On Monday 08 September 2008, you wrote:
> On Mon, 8 Sep 2008, Al Johnson wrote:
> > Some time ago Joerg (IIRC) suggested it might be possible for the
> > brave/foolhardy to replace the undersized caps in the headset output with
> > something more suitable, or even with audiophile esoterica like Black
> > Gates. Looking at the schematics I see these are C4110 and C4111 which
> > appear to be located under the can that has the bluetooth module stuck to
> > the top of it. So how easy is it to open and close this can without
> > breaking anything?
> Hi,
> I tried, just to see if I could do it, to add a capacitor in parallel to
> the VB_SYS one: this is the solution the OpenMoko-people were researching
> to get rid of the
> gta02-won't-boot-on-an-empty-battery-even-with-usb-connected-thing. My
> experience: Don't do it unless you have experience with soldering tiny
> SMD-stuff, and the tools to do it. It's almost trivial to destroy stuff if
> you don't have the experience.
> (btw, I made pics of my endeavour; if anyone wants to see them, just raise
> your hand and I'll upload them.)
> Jeroen

I've done the odd bit of rework on tiny SMD stuff before, so that's not so 
much of a worry. I'm more worried about breaking something while lifting the 
lid, especially with the bluetooth module where it is.

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