Hello…. I have a nice set up spec series system. I works excellent but I have a problem and want to see if someone could guide a bit where to look for the problem. The system works flawlessly when installed off the rack. But when everything is installed in the rack, if I leave disconnected the Spec 4 from AC, everything works great… once I connect the Spec 4 to AC ( same outlet as everything else), I have 2 behaviors: if connected on a certain way (remember there is no polarity or ground on old units) the house breaker goes down when switched on. If I invert the AC plug, then the Spec 4 goes on no matter the position of the power switch generating a hum on speakers.
I gues the ground in Spec 4 is not right but want to know where to check
Thanks
I gues the ground in Spec 4 is not right but want to know where to check
Thanks
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