You can take the TV to australia. You will need a signal converter to convert whatever you're plugging into the TV to the correct format. If you take with you DVD players or anything like that from Canada you won't need a converter, because they'll still run the same like they are now.
If you want to plug in a PAL video source that uses the red white yellow RCA connections you can use this converter here:
PAL to NTSC converterThat should get the signal to the right format to be displayed on your TV.