According to police, Gunasekaran (30) worked as an air-condition mechanic on the sets located at EVP Film City, Chembarambakkam on the outskirts of the city.
The show is being hosted by actor Kamal Haasan. The second floor of the set is for the technical crew and Gunasekaran, a native of Ariyalur, fell from here.
Sources said he was speaking over the phone in the balcony when he slipped and fell. He died on the spot. His body was sent to Government Kilpauk hospital for post mortem.
It may be noted that in the first season last year, a plumber had suffered a bout of seizure and died.