My Outlaw 990/770 was fine last night. This morning they suddenly do not power up. I turn on the 990, it clicks, turns on, the 770 clicks turns on for a second, then they both shut down.

What happened overnight???

Thanks
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Zone 1: Outlaw 990, Outlaw 7700, Panasonic Plasma, Apple TV, 24" Intel iMac, ReVox A77, Mission 77 Series, Mirage LF-150
Zone 2: McIntosh MA1650, Dual 1219, Smaller Advent Speakers
Zone 3: Victor V, Victor Exhibition Soundbox