Due to its history of administrative and financial problems, in addition to delays in payments and strikes by its employees, its concession was revoked, along with six other stations, in July 1980.

[1]: 110 At the end of June 1950, RCA and Emissoras Associadas technicians were finishing the process of installation of the studios at the Sumaré and Banespa buildings.

[1]: 167  Mojica was subsequently invited to perform in the experimental broadcasts of TV Tupi in São Paulo, whose first test was conducted on July 4, 1950, with equipment brought in from the mobile unit and the Sumaré studio.

The first test night in the closed-circuit system had great image quality, and had lived up to what Diário de São Paulo called "the greatest happening in bandeirante broadcasting".

At 9pm, broadcasts resumed with the launch show TV na Taba, featuring a variety of talents that already worked for the group's radio stations, running for two hours.

During the solemn ceremony, Assis Chateaubriand was in the studio alongside Catholic figure Paulo Rolim Loureiro; poet Rosalina Coelho Lisboa Larragoiti, chosen as the "godmother" of PRF3-TV; young actress Sônia Maria Dorce; presenter Homero Silva; and actresses Yara Lins and Lia de Aguiar.

[1]: 207  Said event started thirty minutes later than planned (at 5:30pm) when the test pattern gave way to Sônia Maria Dorce, who became the first face seen on the regular service, saying "Boa tarde!

Yara Lins followed, mentioning the names and callsigns of all of the Associadas radio stations, more than twenty, and introduced "the first television program in Latin America".

[1]: 208–210  The first commercials were read out by Homero Silva and Lia Borges de Aguiar, with congratulatory messages from four brands that invested in its building: Guaraná Antarctica, Lãs Sams, Sul América and Prata Wolff.

[1]: 213 The succession of speeches ended at 6pm, during which the station, covering the hours of the private cocktail, would put the test pattern back on the air, and would also promote the 9pm show.

Stars from the radio stations owned by Associadas were invited and presented in small sketches, but since they had no experience in television, they thought that the show wouldn't go as planned.

A two-minute film showing footage of São Paulo, troops (recorded on Independence Day less than two weeks earlier), the presses of the Associados' newspapers and people listening to radio, followed an initial slide.

[1]: 223  Near the end of the program, at 11:30pm, Lolita Rodrigues sang "Canção da TV", especially composed for the station, after Hebe Camargo declined.

At closing time, during the performance of Dorval Caymmi's song Acalanto, Homero Silva gave one last message: "A televisão é tudo isso, em espetáculos diários que irão ter no recesso do lar de um imenso público.

Early editions paid attention to the then-upcoming presidential elections, which were ultimately won by Getúlio Vargas, who returned to presidency.

[1]: 243 On November 29, the first televised stage play aired: A Vida por um Fio, adapted from the American movie Sorry, Wrong Number.

A new frequency plan was suggested, where São Paulo, instead of having six television stations (3, 5, 7, 9, 11 and 13) would have seven (2, 4, 5, 7, 9, 11 and 13), displacing channel 3 due to co-channel interference.

[1]: 353 In 1959, TV Tupi's São Paulo signal was received as far as the Paraíba Valley and Pindamonhangaba in the far eastern end of the state.

[1]: 354  In the middle of the year, the station bought videotape equipment - following TV Continental's historic feat in signing on with such technology - by buying an RCA-Victor TRT-1B machine, installed on April 19, 1960.

[1]: 384  In the second experiment, held in the following week's TV de Vanguarda play "O Duelo" on May 8, there were problems: the videotape machine was unable to do cuts and there was only one quadruplex tape lasting 60 minutes.

[1]: 384–385 Work on the new Sumaré television transmitter built to accommodate channels 2 and 4 started in 1959[1]: 357–359  and the first experimental test transmission on the new frequency was held on July 4, 1960.