Patent ID: 6295724
Filing Date: 2001-10-02
Classification: H01L,H05K,Y02P,Y10T

Abstract:
Apparatus for reworking a printed circuit board, said printed circuit board having a solder ball grid array attached thereto and at least one via hole having conductive material therein formed in said printed circuit board, electrical connections being provided between a ball grid array pad mounted on one surface of the printed circuit board, and internal circuits and circuits on an opposite surface of the printed circuit board; comprising:a precision drilling arrangement for the drilling out and removal of conductive material present in said at least one via hole so as to sever said electrical connections between the opposite surface of said printed circuit board;a device for inserting an insulated electrical conductor into said at least one hole subsequent to the drilling out and removal of the conductive material therefrom;a connecting device for mechanically attaching a change wire to one end of the electrical conductor to form an electrical connection therewith; anda shaping arrangement for shaping an opposite end of the electrical conductor to produce a new electrical circuit extending between the ball grid array pad and said circuit in and on said printed circuit board through the change wire, and for shaping the one end of the electrical conductor so as to conform said one end to the configuration of the ball mid array.