Problem with Marantz SR7012?

[mbl11428]

I purchased a refurbished SR7012 from A4L and just had my 5.1 system professionally installed including Receiver setup.

I keep having an issue with the sound completely cutting out and a high pitch sound being emitted. I'm able to get the sound back by cycling through the different surround modes but it keeps dropping out. This happens with multiple different inputs and even using Airplay directly through the receiver.

I feel like it's a faulty receiver but could there be any other causes for this issue? When it works everything sounds great, so I don't think it's a speaker issue.

Happy to provide any more info that could be helpful to diagnose

 

[TLS Guy]

Try a hard reset and set it up again.

If the problem persists it is faulty. It certainly sounds as if there is an intermittently unstable circuit some place.

That is a risk of A4L. I suspect they tested the unit and it performed perfectly. So they assumed it was a unit that had just been returned because someone did not want it.

The problem is they would not know there was a fault unless it displayed it under test.

So I would contact A4L and let them know your problem. Honestly, my best guess is that this unit has had the problem from day 1 and needs trashing. One caution, this is the sort of fault that will blow tweeters, so stop using it. Do a hard reset, and if it does it once after that, get rid of it.

 

[sterling shoote]

Or you might just have a short at the speaker connection. Check wiring to speakers.

 

[TLS Guy]

Or you might just have a short at the speaker connection. Check wiring to speakers.

A problem with speaker wiring could never cause that problem.

 

[sterling shoote]

A problem with speaker wiring could never cause that problem.

Yes, it could. One strand of bare wire in fact could cause that problem.

 

[TLS Guy]

Absolute nonsense. A speaker wiring problem could not possibly cause a fault like that.

 

[lovinthehd]

Yes, it could. One strand of bare wire in fact could cause that problem.

Doubt it, a short would more likely just initiate the protection shutdown.

 

[sterling shoote]

Doubt it, a short would more likely just initiate the protection shutdown.

Yes, that's right; and, when the protection does it's job the channel will be gone temporarely.

 

[sterling shoote]

Absolute nonsense. A speaker wiring problem could not possibly cause a fault like that.

What's clear here is your knowledge is not absolute because it can indeed cause such a problem; thus, it is your statement which is nonsense. Fact is your advice on matters like this seem to always suggest what ever the problem, it's hopeless, requiring replacement when the reality might be a simple check of connections or a cleaning might be all that's needed to fix the problem. Your suggestions also tend to rant about choice of gear, and origins of the gear as culprits when such information is not germane or at all helpful but is cause for unneeded distress.

 

[lovinthehd]

Yes, that's right; and, when the protection does it's job the channel will be gone temporarely.

More likely silence with all channels shutting down but hard to know....you forgot alk that horrid music everyone but TLS enjoys

 

[sterling shoote]

More likely silence with all channels shutting down but hard to know....you forgot alk that horrid music everyone but TLS enjoys

Interestingly enough, I re-installed a circa 1990 Sony Receiver, which was removed from my son's bedroom, he's been out of the house for years, in my main listening room to prep it for sale. I connected it quickly with bare ended wire to some small Klipsch speakers I had at hand. I did not notice that one strand of wire crossed to the other post. Initially, upon the start of an LP I saw a red light on the Sony from across the room but paid no attention to it soon enough and then I lost the left channel. My first thought was the unit was broken and it would cost more money to fix it than I could get from selling it. At any rate, closer inspection revealed the nature of the red notice and of my need to be more careful with the speaker connections.

 

[TLS Guy]

Interestingly enough, I re-installed a circa 1990 Sony Receiver, which was removed from my son's bedroom, he's been out of the house for years, in my main listening room to prep it for sale. I connected it quickly with bare ended wire to some small Klipsch speakers I had at hand. I did not notice that one strand of wire crossed to the other post. Initially, upon the start of an LP I saw a red light on the Sony from across the room but paid no attention to it soon enough and then I lost the left channel. My first thought was the unit was broken and it would cost more money to fix it than I could get from selling it. At any rate, closer inspection revealed the nature of the red notice and of my need to be more careful with the speaker connections.

That is not the case with the OP's receiver. It is not passing the intended signal, but emitting a high pitched oscillation instead. That is very different from going into protection.

 

[mbl11428]

In case anyone is still following, the issue was definitely in the refurbished unit. When I first turned on the receiver I heard a pop but didn’t think much of it at the time since I was still able to get audio for a short time. After refund, I replaced with a different receiver and everything’s been working fine.

 

[TLS Guy]

In case anyone is still following, the issue was definitely in the refurbished unit. When I first turned on the receiver I heard a pop but didn’t think much of it at the time since I was still able to get audio for a short time. After refund, I replaced with a different receiver and everything’s been working fine.

Thank you so much for the follow up. This is so important. Giving advice on this forum is very much like "Stump the Chump" on Click and Clack's Car Talk days. Seeing if we were correct or way off is very important to me at leas,t and I suspect others. It does help us improve the quality of our advice if we know how the advice we have given turned out to be correct or wide of the mark.