Hi a client´s PM4500N decided not to turn on yesterday, only the signal, limit, clip and then the fault LED lights up when turning on and then int shuts down. I advised disconnecting al cables and wires and turning on again but still the same result, our bose rep told us to try entering recovery mode but still nothing. So is there anything else to try or is this unit broken?WhatsApp Image 2019-07-09 at 2.07.19 PM

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Hi, i have just change two of these amplifiers with the same symptoms, there no other way to get it work, no recovery whatsoever, just prepare to get it change. May i know how old is this PM4500N, and the AC source is passing thru a conditioner?

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