While it's not under warranty anymore, I'd still recommend contacting the Amazon customer support. Had two friends here in CT get damaged K3's replaced, however they under warranty. Heard a good few stories of old models getting replaced without any fuss.
At worst, it might be worth popping it open and making sure all of the ribbon cables are snuggly in their sockets.
And next time, buy directly from Amazon - they do ship Kindles to SA directly (and a good 30% cheaper than retail shops/online)
