make sure once again that the plastic piece separating the battery pins from the motherboard is in the right place. Without this, the electronics of the tablet may be damaged when touching connecting

connect the digitizer (double plugs). The connection ribbons should be bent towards the inside of the tablet. When closing, tapes should push themselves under the edge of the housing.

set the matrix perpendicular to the housing and plug the connector into the port. You can screw a connecrors bracket. Remove the plastic cover of the battery port and replace the screw - it's time to test.