Did you apply the starter voltage to the controller? If so, you possibly sent more power to the PC5 than it could handle. I cant remember off hand, but im sure the PC5 is either supposed to be disconnected or wired to avoid overcurrent from the battery. How do the idicator lights respond when you switch the PC5 on? Do you get the lights when the key is activated? They should flash then shut off as part of a start up sequence. Once the quad is on, the lights stay lit.
Hopefully this is accurate and helpful.