Welcome to the forum OliverB,

Sorry to read about your troubles. Here is the troubleshooting guide for the EP500 below.

http://www.axiomaudio.com/troubleshooting_ep500.html

I would also encourage you to call Axioms toll free number and talk to one of their audio experts to help guide you through the troubleshooting process.

Good luck!

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne