Our brand new Marantz keeping going into standby mode when put in surround sound mode (1 Viewer)

[lnoel]

We had a guy set up our surround sound here at our home and everything worked great for about a day or two. Then the receiver started to get hot and shut down. We changed the location to give it better ventilation and it continued to shut down after a few minutes. Then we got a new receiver to rule out a bad reciver, and now its doing it again.
We have an older pair of B&W P6 spears for the front, an older B&W front speaker, a sub-woofer, two outside speakers, two 8 inch back speakers and a bathroom speaker all hooked up on the system.
The receiver shuts down for TV and anything on surround (but not stereo), or goes immediately into standby and won't even begin playing so we don't want to push it and fry something.
Somebody told us this could be a bad speaker but that doesn't make any sense to us as they all sound great when working and the two fronts were working just fine last night on stereo. Seems more like a bad connection, or bad wiring or cables? help, our install guy has to keep coming out and he is getting frustrated but frankly I think it is us that should be frustrated. He seems to think he should get paid for the diagnostic process to figure out the problem but we feel like he quoted us a price, we had the eqpt., and here we are.

 

[gene c]

I'd start by trying to isolate the problem. Sounds like a bad connection somewhere but if you installer has been out there a few times he surely would have looked for this. Try removing on speaker wire from the back of a surround or the center channel speaker. Do them one at a time turning the receiver on after each dis-connection. If the receiver stays on after one of the wires was removed then you've found the offending speaker/connection. You could also disconnect all the speaker wires from the back of the receiver and connect them one at a time until the receiver shuts off again (always turn off the receiver when connecting/disconnecting wires/cables. It's tedious and time consuming but you could seriuosly damage the receiver by leaving on while doing this). You also need to make sure your new receiver can hanle the ohm load of the older speakers. Some 6-8 ohm receivers can't power 4 ohm speakers. The P6's are 8 ohms. Check the ohm ratings of the other speakers. Heating up is an indication the amp section is working too hard.
Diagnosing these things is difficult in person, near impossible on the internet.

 

[Gregg Loewen]

Make sure none of the speaker wires are accidently touching the wrong terminal and shorting out the signal.
Marantz has great support, so give them a call too.