Unbranded UB-15MS10 Motherboard Replacement

Use an opening tool to pry off the memory card door located on the back of the tablet.

Remove the two 1.2mm screws found under the memory card door.

Pry around the outside carefully using the black spudger to get in.

Remove the ribbon cable by using the black spudger to release the tab and carefully pull out the ribbon cable.

Peel up the grey tape so that you can get to the board and untape the ribbon cable that was removed from the motherboard in the previous step.

Remove the five 1.2mm screws from the board.

Use an opening tool to remove the board from the case.

Detach the three ribbon cables using a spudger

Desolder the black, white, and red wires.

Unscrew the two 1.2mm screws from the speaker.

Unscrew the two 1.2mm screws of the other speaker.

Remove the old motherboard from the tablet.

Take the new motherboard and solder the black wire of the board to the black wire of the battery.

Do the same for the white and red wires.