by Downunder35m » Wed Jan 05, 2011 1:18 am
If the socket is loose than you might have a crack in the track right at the edge of the solder, so please scratch the isolating paint off a bit a make the new solder point slightly bigger than the old to cover the cleaned parts of the track.
Also a very common problem is that a little diode that protects the charging part burns out.
They are black and pretty tiny, one might be covered by some tape or paper right next to the USB port.
With a good multimeter you can check if you have continuity, you should have a setting for testing diodes on it too but if in doubt it is best to unsoldr them and test them outside the circuit bord to avoid unwanted results from other parts.
Make sure to mark the direction of the diode before taking it out!!
If it is broken you'll have a good chance of finding a replacement inside most modern electronics like VCR's DVD player and so on.
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