PLUS....I disconnect what I think is either a bad channel or cable....NO NOISE...but I still can't get ANY sound out of the system.

I can't believe this but is this a sure indication I have a DEAD AMP??
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SAMSUNG 85” Q7-Series 4K Ultra HDR QLED TV
Outlaw 7700
Outlaw 976
Martin Logan Impression ESL 11A - L/R Front
Martin Logan ElectroMotion ESL - C
4 Martin Logan Edge In-Wall 7.1 Surround
Martin Logan BalancedForce 210 (Sub)
Oppo BDP-105 - (Limited Music Play)
Plex Media Server (All 4k/UHD, Blu-Ray Content, Music Library, LiveTV)
1 Panamax Max 5400 Power Conditioner (for electronics)
3 Furman M-10X E Power Conditioners (Front R/L, Center Martin Logans)
Outlaw Audio PCA Interconnects
Blue Jean BJC 12 White Speaker Cable
AcoustiMat Sound panels and bass traps