A bit of a long shot, looking for a specialised shop that can repair multi-functional displays in Sydney.
We have an older Toyota with multi-functional display not turning on, apparently it's a relatively common issue due to a particular connector/solder join failure on the main board. In the US, there are shops experienced in such repairs. Basically you send in the faulty unit, they perform the repair then send it back.
Are there such shops in Sydney? Would prefer to bring in the unit rather than posting back and forth. It will require experience in diagnosing electronic components and precision soldering skills.
Someone documented steps on how he tracked down the problem and ultimately fixed it, it is beyond me, but surely do-able for people with the right skill. It will be expensive if this is a one off repair, so hopefully there are shops that do this kind of repairs all the time and charge a fixed price.
P.S. Have tried looking for used units, they are very rare.
Try contacting Bankstown Sound or similar specialists to see if it’s something they do.