Looks like you can order directly from the PowerBox site:

http://www.powerbox-systems.com/en/p...box-royal.html

I wish I had someone close by with a unit I could borrow to test. But there are few jet guys in this part of the country. Oh, well. Like you said, it's very likely that PowerBox tested the whole thing before shipping it back, and that a new display will do the trick. Building RC jets will teach you patience if nothing else!