 Although there was no predicted lifespan for the camera, the heavy hot-running four-tube design was considered somewhat outdated even when it was new, which contributed to the camera's near-total failure to sell to broadcasters outside the UK.Furthermore, when EMI closed-down the Broadcast Equipment Division in the late 1970s, studios were deprived of technical and spares support for their cameras.Consequently, several ITV companies began replacing them in the late-1970s with the last commercial operators (Yorkshire & Central) both phasing them out in 1986 (in the main, Central had disposed of them in 1984, however they were used for continuity and presentation from their Birmingham operation until 1986).