In 1989 , Ten 's ratings were in decline .
On 23 July 1989 , recently recruited network boss Bob Shanks relaunched the network and introduced several new programs , including four new prime time game shows .
In 1989 , Ten 's ratings were in decline , so on 23 July 1989 , recently recruited network boss Bob Shanks relaunched the network and introduced several new programs , including four new prime time game shows .