I decided to post my little projects here instead of my blog, so that they can reach and help more people. This is my first Instructable.
My friend brought me his tablet. The USB socket was not OK, probably broken by his son. The tablet makes a strange noise when you try to charge it, and my power banks shut down, which shows a bad short circuit somewhere.
The USB plug is so small, that even with a magnifying glass I can't see a thing, everything is hidden, attached to the multilayer board. Hot gun does not help!
So I decided to use a charging board like this http://www.ebay.co.uk/itm/301905672102?_trksid=p20...
Step 1: Using the Charger Board
The little board on the picture is a USB charging board.
It can charge every single Li-Ion battery.
After you dissassemble the tablet, first solder the board directly to the battery terminals and test it.
ALWAYS use a power bank, because a short circuit can damage your wall adaptor.
After the test is complete (in my case blue light comes on) you can see the time it takes for the battery to get fully charged. Test the tablet, is it working fine.
Step 2: Finishing the Mod
After you make sure it is working fine, drill a small hole on the tablet case for the board wires.
Then put some hot glue above, and you're ready!
The Android/electronics do not detect that the battery is charged, and always show low battery messages.