Its official broadcasts began with coverage only for the Metropolitan Region and Valparaíso at 1:00 p.m. the following day, with the First Edition of Meganoticias hosted by a journalist Susana Horno from the newsroom.

In the first half of 1991, the signal was extended to Talca, Chillán, Concepción, Temuco and Punta Arenas; at the end of the year, it reached a reception of more than 85% of the Chilean territory.

With this, the development of co-productions was announced, such as the program Siempre en Domingo with Raúl Velasco from Santiago de Chile, as well as La Movida by Verónica Castro; however, Televisa's participation dropped to 33% in 1997, and in 1999 ownership of the channel would return entirely to Grupo Claro.

[need quotation to verify] In 1993, Megavisión together with Televisa obtained the concession to produce and broadcast the Viña del Mar International Song Festival, work that until then was carried out by Televisión Nacional de Chile; its animator, Antonio Vodanovic, emigrated to the channel to assume its conduction.

[need quotation to verify] The version of the Viña Festival in 1994 was the first under the alliance with Televisa: the Mexican network acted as co-producer and intermediary to get figures such as the tenor Plácido Domingo and the youth group Onda Vaselina.

[need quotation to verify] In 1995, Mega managed to retain the broadcast rights of the Spanish soccer league at the height of Iván Zamorano's career during his stay at Real Madrid, despite the high price of these.

[need quotation to verify] The dramatic area of Megavisión made its screen debut on 10 March 1997 with the telenovela Rossabella, which ranked third in audiences in the afternoon block.