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Second generation of iPhone. Model A1241 / 8 or 16 GB capacity / black or white plastic back. Repair is more straightforward than the first iPhone. requires screwdrivers, prying, and suction tools.

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Repair power (on/off) switch?

I bought my iPhone 3G second-hand by a friend that had 'dropped it in water' (didn't say how much water).

So now the power switch is 'acting funny' (most of the time not working at all). I've taken the iPhone apart and the switch 'looks ok'.

I don't know what to call/describe the switch, but it's in two (three including the externaly visable part) pieces. The 'main [electrical] body', and a small, oval ('half spherical'?) cup.

It works in the manner that the external button part is pressing against 'the cup' which in turn shorts the electrical part.

I was thinking there was ... 'something' in the water that is stopping the connection/short. But the big question is, is there 'more than meets the eye'?

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Well, I've now replaced the whole button harness and it's still don't work. Don't work in the sence that I can't turn the darn thing off! It's constantly on!

Any idea what can be wrong?

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Success!! I completely took it apart again. Removed the display assembly (but not separating this), mother board and sync connector. Cleaning everything by blowing clean, compressed air (from a aerosol can) in every nook and cranny and trying to get air in between the mother board and the RF sheilding from all directions, blowing everywhere on the back case and on and around the buttons (that where still in the case) and on all connectors (both on the mother board and on the flex cables). Then assembled everything again, making 100% sure that all the connectors where correctly seated. Turn it back on and loo and behold! Everything works like a charm!! I can turn it on and off, I can enter DFU mode and it doesn't reboot as soon as I unplug the sync cable!! Dang, I'm a happy camper now!! :D PS. Just in case this haden't worked, my next attemt would have been to spray/use some 'electronic cleaning solvent'.

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Turbo Fredriksson will be eternally grateful.
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