Screen troubles are only sometimes corrected by firmware upgrades. The rest of the time, something needs to be fixed on the hardware. But just so you know, this forum is meant to mainly support US products and customers. So while this is a service issue, I can't actually offer to set up service for you. I believe you own either a Australian [ ] or New Zealand [ ] model based upon the codes you provided. So I provided the links to both countries above.

Sorry I couldn't be more helpful. Perhaps someone else on here might have more information for you.

-- HD Tech