Shareholders of recently-acquired Milpitas electronics manufacturer Solectron Corp. may lose out on what some claim should be a billion-dollar settlement because of a falling-out between the class representative and Robbins Umeda, the San Diego-based plaintiff firm that represented it for four years.

At a hearing in Santa Clara County Superior Court on Friday, Judge James Kleinberg said he would give class representative Richard Carrigan until Sept. 16 to find a new law firm to represent the class or he’ll dismiss the case. S. Benjamin Rozwood, a former Robbins Umeda partner who left the firm and now accuses it of misconduct, specially appeared for Carrigan and later claimed that the case could be worth up to $7 billion.