First remove the SD Card Slot!

Then loose of the screws on backside

Tablet goes open on frontside.

The Display is clamped in the aluminium chassis. 

Now is open, but be careful with the layer foil for micro USB and 3.5mm jack. 

With two screws you can remove the complete micro USB and 3.5mm jack unit.

Turn the solder iron to about 250deg and desolder the micro USB jack with many tin, clean the pads with desoldering braid and a new jack could be placed.