Hi Pete,
Resets can be due to a number of things which some can be an easy fix and some a little more technical.
If your a hands off type of person, check out the sponsors section on here:
http://aussiepinball.com/index.php?board=93.0APR might be your best bet, depending where in Melb your are. If you're out Geelong way there are some members on here who can probably assist as well.