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the one contact which always has a voltage applied is corroded quite a bit, but this should not translate to inside the watch over time, hm?
No, that should be fine, but it's worth covering up anyway in case it increases corrosion on the two outside pins that you need to charge it.
If pinching it makes it appear on Bluetooth then that would kind of clinch it - and might even bring it back to life.
ok, I think we are on the right track...I found the watch, charged it..and it was still not working...
but, I tried to remove the green stuff from the pin in question, just with some cloth (my t-shirt ;) )...and suddently there was a black hole...I removed a bit more on the sides then, and the rest of the pin has still some gold...but as you can see in the picture, somehow the pin has a small hole, which...not sure...
seems like the corrosion somehow found perhaps a weak spot or imperfection and got there through the remaining parts of the pin...I've not testet how deep this thing goes, but I think this could be some way for humidity to get into the watch...
My wifes bangle pin looks similar green, but apparently no hole until now...I hoe it stays this way :)
edit: not sure why he puts the
1.
in the quote...
No, that should be fine, but it's worth covering up anyway in case it increases corrosion on the two outside pins that you need to charge it.
If pinching it makes it appear on Bluetooth then that would kind of clinch it - and might even bring it back to life.