Yamaha Receiver shut off when a load whistle was in a show

[ecoda]

Awesome forum. Glad I found it.

I have a Yamaha HTR-6230 in a system that was professionally installed about 2 years ago that I've never had an issue with...

Until this AM when I was exercising while watching the 'Sons of Anarchy.' Suddenly the receiver shutoff. I went in to check, turned the receiver back on, it displayed a message "Check Sp connection." It was working fine again though, so I rewound the show so I wouldn't miss the part that kept playing while receiver was off. Then the same thing happened. So I rpeated each of those steps... Finally, I realized it was happening whenever a certain really high-pitched whistle was in the show. Each time I went back to play that whistle -- > Safety shut down.

Found this forum, to troubleshoot, then I checked speaker connections in back, and there was one little stray strand. I fixed that... still had the issue.

When I lowered the volume a little the receiver could handle the high-pitch whistle. I raised it the volume back up, and finished the rest of the episode without another issue.

Other maybe relevant info:
- The episode had many loud gunshots and screaming played at the same loud volume with no issue.
- The A/V source was from Netflix via a wireless Google Chromecast from an Android phone -- with not the greatest equalized output

My questions are:
1) Could this become, or is this already, a big problem?
2) Could loud, poor quality, very high-pitched sounds trip the receiver's safety without it being a major problem?

Any knowledge you can would be greatly appreciated.

 

[Phanuel]

I don't know what's causing your issue as I don't own any Yamaha receivers.

You should also check out http://www.avsforum.com/forum/index.php as they are dedicated entirely to Audio/Video where as this is more of a general computer tech forum with some side interests in A/V.

 

[razel]

My Yamaha also shuts down when you turn the volume too high, ~95% of max with nothing playing. However, mine is an older model so it's not as sophisticated yet to display any warnings. In my case, it was also a safety mechanism related to max voltage level of line-level outputs, which I use.

When you mentioned loud explosions, I immediately thought the same, but you mentioned ChromeCast which is HDMI so it is something related to the speakers. What'd I'd try is check the manual for the lower impedance setting. You usually have to enter a separate menu that you can only get to when the Yamaha is off. That setting will cut your amp power in half, but I'd use that as an easy test to see if perhaps your speaker impedance is too low, or gets too low when things get loud. Which usually means, something has gone wrong with them, if you didn't have this issue before.

 

[purbeast0]

i had this same exact problem happen 2x with a yamaha receiver that i purchased in 2001. the issue both times was a blown fuse. luckily i purchased it when working at best buy and got the service plan for 8 years for like $5, so they repaired it for me. but i was told that was the issue both times.

i use the receiver as a secondary one now and it's still working fine to this date. it hardly gets any use though.

 

[ecoda]

an easy test to see if perhaps your speaker impedance is too low, or gets too low when things get loud

What should happen when I lower the impedance? How will I know if the test passes or fails?

Also, I should let you know the Chromecast is kinda of damaged. The HDMI male insert is loose inside the device. I occasional hear a static-y popping noise coming from the when I'm using the Chromecast-- which normally mans I have to wiggle the HDMI insert around until I no longer here it. Could this create sound fidelity issues?

 

[bradly1101]

Awesome forum. Glad I found it.

I have a Yamaha HTR-6230 in a system that was professionally installed about 2 years ago that I've never had an issue with...

Until this AM when I was exercising while watching the 'Sons of Anarchy.' Suddenly the receiver shutoff. I went in to check, turned the receiver back on, it displayed a message "Check Sp connection." It was working fine again though, so I rewound the show so I wouldn't miss the part that kept playing while receiver was off. Then the same thing happened. So I rpeated each of those steps... Finally, I realized it was happening whenever a certain really high-pitched whistle was in the show. Each time I went back to play that whistle -- > Safety shut down.

Found this forum, to troubleshoot, then I checked speaker connections in back, and there was one little stray strand. I fixed that... still had the issue.

When I lowered the volume a little the receiver could handle the high-pitch whistle. I raised it the volume back up, and finished the rest of the episode without another issue.

Other maybe relevant info:
- The episode had many loud gunshots and screaming played at the same loud volume with no issue.
- The A/V source was from Netflix via a wireless Google Chromecast from an Android phone -- with not the greatest equalized output

My questions are:
1) Could this become, or is this already, a big problem?
2) Could loud, poor quality, very high-pitched sounds trip the receiver's safety without it being a major problem?

Any knowledge you can would be greatly appreciated.

How much air is it getting? It sounds like it's overheating. A lot of people stuff these receivers in a cabinet, which is a major no-no. A receiver must stand alone. My Pioneer 7.1 AVR requires 65cm clearance on top and 40cm clearance on the sides according to the operator's manual.

 

[ecoda]

It's on the bottom shelf of two shelf table. It could probably use some more airflow... but this hasn't happened before and the unit was only running for about 20min. When touched the ceasing it didn't seam too hot.

Could one 'whistle' cause amp to overheat?

 

[sm625]

It is probably an artifact from the multiple transcoding going on. At some point, the whistle is being erroneously converted into higher volume when it should not be. The volume should be clipped at whatever your volume setting is, so it should not cause the receiver to shut off. I bet its the chromecast. If you play that same video using the headphone jack to the receiver RCA inputs, I bet it doesnt happen.

 

[razel]

What should happen when I lower the impedance? How will I know if the test passes or fails?

Also, I should let you know the Chromecast is kinda of damaged. The HDMI male insert is loose inside the device. I occasional hear a static-y popping noise coming from the when I'm using the Chromecast-- which normally mans I have to wiggle the HDMI insert around until I nom longer here it. Could this create sound fidelity issues?

It passes if it doesn't shut down anymore. As for your broken ChromeCast, I would be careful and not use it anymore. One of my Yamaha's HDMI port is busted and it's all my fault. My receiver is one of the earlier HDMI Yamaha's and it did not like being HDMI being hot-plugged.

I wouldn't want the same to happen. Any intermittent electrical connection can cause any problem. Your ChromeCast is $30 a new receiver is 10 times as much.