I. Hola Silvia, si te refieres a que expulsa la cinta nada más haberla cargado puede tratarse de este mismo fallo del video..
https://www.youtube.com/watch?v=lmYzVLSgnGk
https://www.youtube.com/watch?v=2iw0FzBjn8s
otra incidencia similar,
https://www.youtube.com/watch?v=2CBQm3UduK4
Un usuario comentó lo siguiente en el primer video
**Underneath that large white gear is a smaller black one. They commonly split with age and it seems to be the case with your. This black gear is at the bottom of a metal shaft that goes through that larger white one you can see spinning. The smaller black one makes contact with and smaller gear that is white and has a longer shaft. This connects with a flat metal gear that allows the vcr loading arms to either load or unload the tape. You cannot buy them from Sony, but you could find one similar. Failing that you either have the choice of repairing the split one or getting a decent one and removing the gear and shaft assembly and replacing those with your faulty one.**
Podríamos tratar de buscar tutoriales de desmontaje del video pero no he encontrado información sobre tu modelo en concreto pero sí para modelos similares, (si pudieras subir capturas de la parte interior del VCR sería útil para que otros compañeros con conocimientos pueden valorar la avería)
https://www.youtube.com/watch?v=ev1hzeD1Mrk
https://www.youtube.com/watch?v=WAtAW9ih4co
https://www.youtube.com/watch?v=2CBQm3UduK4