No sound from speakers - Sony STR-DN1050
I'm currently in the process of setting up my first "real" Home Theater system and I've run into a major (HUGE) problem. I think the receiver I bought (Sony STR-DN1050) is broken, but I'm not sure if I know enough about this whole process that I can legitimately return it for an exchange (purchased from Amazon.de). I don't think it should be this complicated (or maybe I'm just being stupid...)
The short story is that I can't get anything more than a buzzing sound from any speakers connected to the speaker terminals, or from the headphone jack. HDMI sound (and video) passthrough to the TV seems to be working fine.
2) TV receiver
3) Bluray player
4) Apple TV
All are connected to the AV receiver via HDMI connections, and then a single HDMI cable output to my Samsung UE55F6470 TV. With no speakers attached (I didn't have any yet) I can output the HDMI sound to AMP+TV and receive sound and video on the TV with no problems. I bought a set of 5.1 surround speakers (Harmon Kardon HKTS 16) but when I hook them up nothing comes out except a static/buzzing sound.
I've tried every possible connection type that I can manage to see if i can figure out what is going on, but no matter what I do I can't get anything out of the speakers.
-Factory reset of receiver
-All speakers connected
-Single speaker connected to various terminals
-Subwoofer connected and disconnected
-New speaker wire for speakers
-Different speakers (proven to be working)
-Confirmed my speakers work on a different stereo receiver
-Optical cable from Apple TV to receiver
-Optical cable from Samsung TV to receiver (with sound output to external speakers)
I'd appreciate any input, or at least some reassurance that it truly does look like the receiver is bad and needs replacement.