Does anyone have any problems with the Onkyo TX-SR601? I thought I got a good deal from Ecost.com for $279 in Aug. The first unit did not make any sound on arrival, tuner did not locked on any station at all. Returned it for another. The 2nd unit worked for almost 2 months and now does the same thing, nothing from the speakers except some popping noise as I switch modes, tunner does not indicate that it has locked on to a station. Tried the speaker calibration procedure to see if I could get a pink noise signal, nothing just silence. This is fustrating and disappointing. I'll have to take it in for service. Kinda wished I had gone for a diff brand.