AVS Forum Addicted Member
Join Date: Jan 2001
Location: upstate NY
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Make sure all the power supplies are plugged in and working.
In another thread where someone reported a similar problem, it was determined that although the documentation for their baluns and switches claimed that their external power supplies were optional, they actually were required. When power was connected, the glitches went away.
Marantz SR7009 avr + MM9000 amp --> Atmos 7.1.4
Fronts=NHT 2.9+AC2, FH+TM=DefTech PM1000, LCR+TM amped