No sound I just set up my new Onkyo TX-SR605 and Onkyo speakers.  I've checked the wiring several times.  Connections look good, correct polarity.  I get absolutely no sound from any of the 7 speakers.  No buzz, hum, or anything else that might indicate that they are connected.  Am I missing something.  Thank you for any help.

The chances are that you have selected an incorrect sound setting or not switched it on, for the HDMI you are using. With Onkyo receivers each connection will have it own settings for video and sound. You just need to look in the manual as to how to select the settings.

IF and only if, your receiver has connections labeled as "pre-out" can it be connected to an external amplifier.

If it does, then you connect from the left and right channels from the receiver, to the left and right channel on the amplifier.

over heating your amp with a problem and its going into the protect mode... better stop before it dies for good...$$$ to fix....speakers mismatch or wrong ohm rating for starters bad speaker, bad xover...

Does any good sound come through headphones, if you plug any in?

some surround sounds do not put out loud sounds except from the front speakers only. Try using different inputs to see if it makes a difference.

The only thing I can think of is that the microphone that detects speaker signals is in a position that blocks the sound from that speaker. When it's testing there should be no noise from anything or anyone.

Same problem. Does the internal Cooling fan turn on?

I sent this TX-SR605 system to an authorized dealer for repair. It seems like it is a very simply problem - the internal set-up mic jacket closed circuit, so the system think the set-up mic is always plugged in (even when physically unplugged it, the system still detect plugged in). And it enters the automatic speaker setup and never quit.

Now I have the receiver back home and tested it. Everything worked O.K. now. It is a pity that this new-bought equipment (just one month) need repair for just a small action of plug in a mic ( I swear I plugged it in very tenderly). It is shame for such a unreliable performance happened on brand name like ONKYO. How can you be confident for an equipment failure in one month.

if you only have 5 speaks hook them to surround not surround back. this shoud work
P man