BlackBerry Ltd has no plans to shut down its loss-making handset business, incoming interim Chief Executive John Chen said on Monday, adding that the smartphone maker has sufficient resources to stage a turnaround. “I have done this before and seen the same movie before.” Chen, who is replacing Thorsten Heins as CEO, performed a similar turnaround in the late 1990s at Sybase, an enterprise software and services company that was eventually acquired by SAP AG in 2010. Silver Lake recently partnered with Michael Dell to take PC maker Dell Inc private. Chen said his involvement with BlackBerry has nothing to do with his ties to Silver Lake.