P. Singh to supervise the board meetings and slated the next hearing for Aug 25.
The court said that day-to-day work of the public broadcaster would be handled by the CEO and two senior officials.
The chairman had contended that the allegations of financial irregularities must be investigated by the Central Vigilance Commission as no internal audit has been done for the past several years.
The court's observations came while it was hearing a public interest petition seeking direction to the central government to remove the CEO whose tenure has been extended.
It was alleged that Lalli, who was appointed in 2006, was to retire in April this year after attaining 62 years of age, but his tenure was extended after the government applied an amendment with retrospective effect.
The petitioner, the Centre for Public Interest Litigation, an NGO, also sought an independent probe into the allegations of financial irregularities by the CEO.