SMH has a report
here though it is full of sensational passenger quotes.
I'm already sceptical about the press reports. For example:
A friend of one of the passengers said the pilot announced there was smoke coming from the instrument panel.
appear true EXCEPT as it appears early in the article, you might assume the passengers knew that during the flight. However if you sieve through the SMH article, it seems passengers weren't informed about the "smoke coming from the instrument panel" until after the flight landed and even then, only by "the captain" coming through the cabin to announce it - stopping every "10 metres".
Sounds more like the PA was out. Also looks like a lack of information freaked some passengers out.