Number one , buy another amp and then contact EBS about servicing your amp . Is it worth the cost if you also have to ship ?
I'm a firm believer in redundant systems..."two is one and one is none". That being said, I'd love to catch the Reidmar in the described non-functioning state and do some some operational / functional diagnostics...and there is a methodology. Could be something really simple / stupid as suggested by others.
Riis