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Jurassic World: Dominion Dominates Fandom Wikis - The Loop
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When Tv Excelsior had any signal loss the mascots of the channel, Ritinha and Paulinho, would sing this jingle:
"Não desligue, não! O defeito é nosso. Estou fazendo o que posso pra consertar sua televisão!'"
To this day, no recording of these incidents are avaliable.

UPDATE 12/10/2021
The instrumental version has been posted to YouTube (Track 10 )
https://youtu.be/1GJ08daTFE0
https://www.sampaonline.com.br/embalagemecia/colunas/elmo/coluna2001ago10.htm