Acoustimass 300 has no power light
I have a ST300 system, with Acoustimass 300 and Invisible 300 speakers purchase in June 2018. The AM300 is no longer putting out any sound and the status LED is off. I have unplugged and waited and reset but the AM300 is completely dead. I have tried different power sockets and cables but it does not power up. It seems to be similar problem to other posts which required repair. I tried calling service and repair number but due to COVID19 issue no service available. I am concerned as my warranty will expire on 10 June 2020!
This seems to be a common problem please provide some advice.
I did a full factory reset of the system, installed the latest firmware, re-paired, etc (several times). At this point the AM300 has a LED that slowly flashes both amber and white in sequence when the ST300 is powered on. When the ST300 is powered off, the AM300 does a slow Amber flash for several minutes, then finally changes to a steady amber led. The ST300 led status lights show white (connected) when powered up.