[Gta04-owner] (GTA04A3 only...) GPS fixing trouble

[Christoph Mair]

On Mon, Mar 26, 2012 at 10:13 PM, Neil Jerram <neil at ossau.homelinux.net> wrote:
> My colleague managed to remove the
> old switch and install the new one quite quickly, but examination then
> showed that two of the pins were shorted together.  He tried wicking
> some of the solder between those pins, but that didn't work

Which two pins were shorted? Was the middle one on top of the chip
involved? If yes, it's a pain to solder/desolder that because it
connects to the system ground plane and therefore needs much more heat
than most solder irons can provide. I used a combination of a hot air
gun together with a solder iron to rework that beast.

>  The switch was removed,
> cleaned up and saved up, but unfortunately during that process one of
> the pads (the bottom left one, relative to the writing on the switch)
> detached from the PCB.

This pin should be connected directly to the capacitor C1210 which is
right below the switch. A short wire or a "bridge" made of tin should
do the trick.

> Is there anyone who can possibly help fix this for me, or recommend
> someone who could help?  I'd be very happy to send my GTA04A3 anywhere
> it might need to go, and cover all postage and reasonable costs.

I could probably do it if you send the device to munich, germany, but
I can't guarantee the shortest RTT. It could take up to a week until I
can have a look at it.

Regards,
  Christoph