The station continuously broadcasting Tupi programs until 1970, when TV Cultura was founded in the capital, which signed a contract with the Diários Associados network.

In 1975, the Associated Broadcasters began to face financial problems, shortly after the creation of Jornal de Santa Catarina.

In addition, the costs with the communication group and other businesses were liquidated and ended up generating a decision by the broadcaster's management company.

Globo then transfers its signal to the new station, and does not renew its contract with TV Coligadas, which was scheduled to expire in July 1979.

As a form of retaliation (since Petrelli had participated in the channel's competition and had been passed over in favor of RBS, which was more enlightened to the Federal Government), the broadcaster in Blumenau decided to boycott the exhibition of the soap operas that Globo had premiered in the first half of 1979 (Memórias de Amor, Feijão Maravilha and Pai Herói), and decided to anticipate its departure from the network by three months, migrating to Rede Tupi on May 1, which made RBS anticipate the opening of TV Catarinense to the same day, still unable to produce local programming.

[1] The following year, weakened by financial problems and the loss of Globo's programming, TV Coligadas is again put up for sale.

In March, it is acquired by Rede Brasil Sul de Comunicações, and starts broadcasting in a chain with TV Catarinense, in addition to being re-affiliated with Globo on April 1, exactly 11 months after leaving the network.

For a few years, it also produced RBS Comunidade on weekends, which addressed issues and initiatives of local interest in the region, as well as its co-sisters throughout the state.

On November 22 of the same year, the broadcaster inaugurated a new scenario in Globo's standard,[11] which had some modifications with the debut of the new television news graphics in 2015.

On June 17, 2022, Adriana Krauss left NSC TV Blumenau,[16] being replaced by reporter Patrícia Silveira in the presentation of Jornal do Almoço, and by Katiuscia Reis in the local journalism coordination.