Help! Right speaker has no sound

[xiaominhu]

I'm really confused what causes the problem.

I had Axiom speaker M80 and QS8, Denon 1908 receiver along with my OPPO 980 DVD player for 4 years w/o any problem. 2 months ago, I purchased SONY BDP S-590 BD player. The player works fine. About two weeks ago, when I play the planet earth BD, suddenly I realize the front right speaker has no sound. Then I tested other DVDs with both my SONY BD player and my OPPO DVD player, I get the same problem. But if play a CD w/o using HDMI connection, the sound are fine. I changed the speaker connection wire (Raptor 12 gage wire), different HDMI cables, and different pair of speakers, the results are the same. when play DVD/BD, sometimes, the Denon receiver enters into protection mode (I remember this happened once before the sound problem appeared)
Then yesterday I borrowed an unused Pioneer 521 receiver from my friend. I played CDs with my Oppo DVD player, I think the sound is fine (But I could be wrong since the default one is surrounding mode. Too bad, I can't recall if I actually checked each speaker ). Then play the same planet earth BD and I realized there is no sound from front right channel too. Further diagnose showed this is true for both my BD and DVD player, w/ or w/o using HDMI connection. (The Denon w/o HDMI connection is still fine).
I'm confused about what's wrong here. The SONY BD player damaged both receivers? or something else. Any help is appreciated.

 

[FirstReflection]

Any time a receiver goes into protection mode, that's a dead giveaway that you have a short circuit in your wiring somewhere. Are you using banana plugs to plug the speaker wire into the back of your Denon receiver? Or are you using bare wire connections?

I know you say you've checked your cables and wires already, but trust me on this, the most likely culprit is that the two leads of your speaker wire are accidentally touching and causing a short circuit. Since you had problems with a different receiver, my guess is that you have an accidental short circuit where the speaker wire for you're front right speaker is plugged into the speaker itself. Double check really carefully. I bet you'll find a stray piece of wire crossing between the two ends of your speaker wire where they plug into your front right speaker

 

[xiaominhu]

I use bare wire connections, not banana plugs.
I tried with another set of speaker (my QS8) as my front speakers, the problem still exists (i.e., any speaker connected to my front right outout of either of my receivers has no sound). So I tried different wires, HDMI cables, different speakers, different receivers and different DVD/BD players. It is the same results. i.e., the right front speaker has no sound (except when connecting with my Denon receiver w/o using HDMI)

 

[TLS Guy]

You have not been given logical advice.

The right speaker works from an analog source, but not digital. So obviously your amps speaker and wiring are OK.

An HDMI wire could not possible result in failure of sound from one speaker.

So your problem is in the digital circuits of your receiver.

Since the problem ultimately affected two receivers, your logic that your Sony BD player may be the problem is quite likely.

I have heard of cases were units "hose" units via HDMI.

In fact it happened to our "Grand Puba" Gene, a few years ago, when his high end Denon receiver was "hosed" via HDMI from another unit.

Boy was he upset and posted a long rant!

 

[xiaominhu]

Yes. It looks like the digital output. The optical output of Denon receiver also does not work.

 

[TLS Guy]

Yes. It looks like the digital output. The optical output of Denon receiver also does not work.

I think you mean the optical input.

I would be suspicious of that BD player like you are. Damage to the micro processing circuits will also cause receivers to shut down.

Since this is a digital problem, I would set the receiver back to factory default settings with a reboot, and reset the system up.

There is a reasonable chance this may solve your issue. If not, your receiver needs repair and your BD player should be returned.

 

[markw]

What is this "hose" stuff?

I have heard of cases were units "hose" units via HDMI.

In fact it happened to our "Grand Puba" Gene, a few years ago, when his high end Denon receiver was "hosed" via HDMI from another unit.

I've never heard of this. Could someone please explain this term?

 

[xiaominhu]

Thanks. I reset both receivers. No luck (well the Denon actually has some sound in front right speaker with HDML connection. But it is very weak compared to analog connection).
So I have to get my friend's pioneer receiver repaired (it is still in warrenty). I don't know if Amazon will accept the return of the SONY BD player because it is more than 1 month already. Since my Denon receiver only has one HDMI input, it is probably time to seek a new receiver (or with amp/preamp options) and a good BD player. Any suggestion? No more than $2k for both. Mainly watch moview and listen to classic music

 

[TLS Guy]

I've never heard of this. Could someone please explain this term?

I don't work with digital circuits, it is beyond my pay grade, so I can not give you chapter end verse to the specific technical details. I do know that errant units can send damaging signals to other units via HDMI.

I used the term "hose", as that is the term Gene concocted when he ran into the problem and posted his rant.

If I remember correctly it was his projector that sent the offending signal or voltages back to his Denon receiver and fried the digital circuits.

On reflection I should probably amplify my remarks. With the frequencies at which digital signals are transmitted blocking capacitors would not be able to be used. Therefore it would not be a surprise to me that a fault in a unit with a wire connection could easily damage another.

I was at an AES meeting last fall, about AES 42 for professional digital interconnects. This is a new standard and is optical only. The reasons stated were avoidance of ground loops and prevention of damage to very expensive interconnected units.

I came away with the feeling HDMI needs to be phased out. I think pro and domestic should use AES 42 for digital interconnection.

 

[GranteedEV]

I don't work with digital circuits, it is beyond my pay grade, so I can not give you chapter end verse to the specific technical details. I do know that errant units can send damaging signals to other units via HDMI.

I also experienced something odd via hdmi in the past:

http://forums.audioholics.com/forums/home-theater-pc-htpc-media-servers/71517-hdmi-transmitting-power-supply-noise.html

 

[ahblaza]

I also experienced something odd via hdmi in the past:

http://forums.audioholics.com/forums/home-theater-pc-htpc-media-servers/71517-hdmi-transmitting-power-supply-noise.html

Very interesting, thanks Grant.

 

[ahblaza]

I think you mean the optical input.

I would be suspicious of that BD player like you are. Damage to the micro processing circuits will also cause receivers to shut down.

Since this is a digital problem, I would set the receiver back to factory default settings with a reboot, and reset the system up.

There is a reasonable chance this may solve your issue. If not, your receiver needs repair and your BD player should be returned.

Mark, do you just go into receiver and set everything back to default and unplug unit and replug to reboot? Sorry for the juvenile question? I never had to do this, thus the query. Thanks my friend.
Jeff

 

[ahblaza]

Thanks. I reset both receivers. No luck (well the Denon actually has some sound in front right speaker with HDML connection. But it is very weak compared to analog connection).
So I have to get my friend's pioneer receiver repaired (it is still in warrenty). I don't know if Amazon will accept the return of the SONY BD player because it is more than 1 month already. Since my Denon receiver only has one HDMI input, it is probably time to seek a new receiver (or with amp/preamp options) and a good BD player. Any suggestion? No more than $2k for both. Mainly watch moview and listen to classic music

XIA, go to Amazon site and pull up your recent orders history, click on return options, then start a chat with rep, explain your situation and tell them the unit is defective, ask for refund and prepaid return shipping label, Amazon customer support is pretty good, more than likely they will make it right, if that person can't, ask for the matter to be considered at a manager's level, you will get resolution.
Here is a really nice receiver at Onecall, they have a feature on their site when you select a product, it's on the right side of product discription called
Tell us your price, put a price in and send it they will send you a counter offer lower then the listed price, it works.
Also BD player. Good Luck....

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