When I had Auto-Polling set on "OFF" I lost the signal one day and had a tough time getting it back. When I turned the Auto-Polling to "On" it resolved my problem.
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Charlie,
Outlaw 970, B&K AV5000, Paradigm Ref 20 and CC (V1), Martin Logan Dynamo, Sony 42" RPTV, Toshiba HD-A1