CBS’ board met but didn’t replace Laurence Tisch.

Before the meeting, there had been rumors that Laurence A. Tisch, CBS’ acting chief executive since the forced resignation on Sept. 10 of board Chairman Thomas H. Wyman, might be named to the post on a permanent basis. But spokesman George Schweitzer said the board took no action on the appointment of either a permanent CEO or a permanent board chairman. He said he had “no idea” when it would make a decision. The board chairmanship currently is held on a temporary basis by CBS founder William S. Paley, 85.