Question about Yamaha RX-Z9 Receiver

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Zone 2 problem

I have had an ongoing problem with my Z9 shutting off intermittently. I suspect it has to do with zone 2 running in background. I have limited the power to zone 2 by adding manaul volume switches for the zone two speakers and a speaker selector switch but still have the problem. For example, the other night I was watching "Transformers", on the main surround (5.1) and about half way through the DVD it AMP just shuts down. Any help or thoughts would be appreciated.

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  • mblaksley Jan 20, 2008

    This is great information. I will follow up and see if I can get the code. Agree about the heating issues with the Z9.

    Thanks again for the help

  • sfang Apr 02, 2008

    I have Yamaha Receiver RX-Z9 dated from 12/2004, recently something wrong with the power, when I press the power button or from the remote control, it's on for less than a second and off itself for the first press, sometimes for more then 3 times, just like that, on and off(itself), but when I try a few more times, it stays on, OR sometimes it will stay ON after the first or second attempt.

  • dryslot Apr 08, 2008

    I'm having the same problem. I've never been a big Yamaha fan from the beginning, but I let my home theater guy talk me into it. Now I kind of regret it. It's beginning to feel like a $5,000 dollar brick. And, as others have reported, it runs nuclear hot. To counter that, I have a strong fan blowing across it in my already very well ventilated stereo closet. Despite the fact the fan solution works (no problem now touching the top or sides of the unit, it's barely even warm), the unit still kicks off after one to two hours. Nothing like a shut down in the middle of the 3rd quarter of your superbowl party.

    Perhaps there is some sub-circuit deep in the unit that is overheating, and not detectable from an external vantage point. Generally after a 15 minute wait, it will turn on again. Any attempts prior to that result in an immediate shutdown again.

    The manual says nothing about any kind of diagnostic sequence you can access to determine the cause. I've tried doing a reset with the power cord pulled out for 30 seconds. That didn't help this matter. The only thing left to try, before pursuing a professional repair shop, is setting the impedance from 8 ohms to 6 ohms. See page 30 of the manual for the simple instructions on how to do that.

    I made the change and have only checked to make sure I was still hearing sound, which I was. From here all I can do is wait until we watch our next movie, or some extended TV viewing and see if the unit is any more stable.

    I'm not too optimistic this will change anything, but worth a try. At least the manual did recommend to check this if one is experiencing 'power-up' problems.



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I had a simular problem. Mine would intermittently cut off when powering on. which could also be same solution as as others since problem ended up being a bad connection on input power/relay board.. . If you are looking at top of receiver it will be at the very back toward the center. Take the small circuit board out being especially careful to mark where the connectors go so you can put back in proper place when reassembling. Mine had a very obvious bad solder connection on a wire. Yours may not be obvious so I would suggest resoldering all the wire connections . If yours only cuts off intermittently.. Hope this helps. Donald


Posted on Apr 29, 2011

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The Z9 does run hot and should not be enclosed in any cupboard. It needs about a foot (30CM ) of clearance all around it.

Posted on Feb 05, 2011

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I also have the Z9, but since I'm living in Europe, it's de DSP-version. Not that it makes any difference, because mine faces the same issue. Heat does seams to be the issue, however, it's having the same problem when it has not been used for a couple of days. I admit, the occures where during summertime with 26 degrees Celsius in my living room.

After investigation of the shop, the advice was to put it further away from the television (both were directly next to each other).

Try it and see what happends.

Posted on Nov 30, 2008

  • R v L Nov 30, 2008

    By the also seems that the turn on/off button on the Z9 itself ( so not on the remote) makes the problem worse.


I took my Z9 in for service as I had this same problem. It would run extremly hot. It took about a week but it was fixed for free under the 5 yr warranty. It now runs fine and is nowhere near as hot as before. I just can not figure out how to turn off the Zone 2 indicator.

Posted on Feb 01, 2008

  • neun9zig Dec 14, 2010

    Concerning Zone 2 indicator: Look at the manual, page 94. There is a description how to activate the "Zone"-mode for the big (black) remote. After you programmed the remote you can select "Zone2" using the the "Source Select" buttons and turn the Z9s internal Zone 2 amplifier on and off by pressing "System Power" / "Standby". Took me a while to find out how it exactly works... Positive side effect is that the unit doesn't get that hot anymore!


Your unit's internal breaker is tripping out. Hmmm...I think all of these high end Yamaha AVRs have a self diagnostic program. I have an earlier Yamaha model (1998) DSP-A1 and it does. You should be able to access the diagnostic readout by pushing the right buttons on the front panel. I have a service manual for my DSP-A1 and it shows how to do it for my unit. The diagnostic program stores in memory what fault caused the internal breaker to trip. I would suggest you get a copy of the service manual for the Z9. You can readily get one on the web from various suppliers for a small fee. My guess would be a high temperature trip as I have heard the z9s run very hot.

Posted on Jan 20, 2008

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Posted on Jan 02, 2017

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