noooo... when you come out of the station, you should see a crappy post office... this is basically the high street of lidcombe.. go left once you come out of the station.. you'll see a bridge on the left.. ignore that. there's a small street to the right, with a petrol station on the corner... walk down that street, and you'll get to the end, where there should be like, a small block of flats on the corner.. turn left again, and cross the road at some point.. at the end of that road, straight ahead, you should see the cemetery... just grass and shit in this part though... turn right here, and now just keeeeep walking straight... you'll pass by a bunch of houses, keeeeep walking.. you'll pass by the tafe, and then keep walking, and you'll find cumbo...
otherwise, if the buses are running, just get on the bus. its summer for gods sake! there are like, only 2 buses that come to lidcombe station... in 3 yrs, ive only come across 2... both will go to cumbo.. one is dedicated to the uni, and one is going to auburn hospital, and will stop outside the uni.. but hey, jst ask the driver.. sometimes the hospital one lies and says he wont go to the uni, but they do.
alternatively, there is a taxi rank, you could get a taxi, costs $7...