It is recommended to call the official customer service directly for repair. You need the accessories original factory should have goods. After the repair will have a professional master door to give you replacement or repair.
You can buy almost the same parts outside, but almost is still poor. Inside there may be a different program, there are plug-ins need to be changed, so there is no basis, there may be their own can not be replaced. So it is still recommended to find the original repair.