No sound from the Sub

[Doondoons]

Hi all, i wonder if i could get some help.

I have recently upgraded my AVR to the Denon S760H hoping that it would fix my issue with my sub but it did not unfortunately.

on the bottom of my sub there is an LED which is red in stanby mode blue when recieving signal. i don't know if these are exactly the speaker set i own but certainly look similar Onkyo SKS-HT993THX so they are a good few years old now.

The Sub seems to come out of standby indicated by the blue LED but i get no sound at all. I can fix it by a simple power cycle so it's not the end of the world but where the sub is located in an awkward place so isn't ideal and would be great if i could fix it if anybody has heard of this or know what i can check to fix.

Thanks

 

[TLS Guy]

Hi all, i wonder if i could get some help.

I have recently upgraded my AVR to the Denon S760H hoping that it would fix my issue with my sub but it did not unfortunately.

on the bottom of my sub there is an LED which is red in stanby mode blue when recieving signal. i don't know if these are exactly the speaker set i own but certainly look similar Onkyo SKS-HT993THX so they are a good few years old now.

The Sub seems to come out of standby indicated by the blue LED but i get no sound at all. I can fix it by a simple power cycle so it's not the end of the world but where the sub is located in an awkward place so isn't ideal and would be great if i could fix it if anybody has heard of this or know what i can check to fix.

Thanks

The problem is the sub, and it's on its way out. That is an end of life problem for that sub as it is now requiring what we call frequent soft resets.

 

[Syphirioth]

Hi all, i wonder if i could get some help.

I have recently upgraded my AVR to the Denon S760H hoping that it would fix my issue with my sub but it did not unfortunately.

on the bottom of my sub there is an LED which is red in stanby mode blue when recieving signal. i don't know if these are exactly the speaker set i own but certainly look similar Onkyo SKS-HT993THX so they are a good few years old now.

The Sub seems to come out of standby indicated by the blue LED but i get no sound at all. I can fix it by a simple power cycle so it's not the end of the world but where the sub is located in an awkward place so isn't ideal and would be great if i could fix it if anybody has heard of this or know what i can check to fix.

Thanks

Connected trough RCA/Jack? I had this with an amp before. The signal was to low and did not take it from Stand-By. But when the signal was there and I turned on and off it did work. I had to change settings for the RCA output so the signal was stronger. Never had problems after that.

Look if your output device have anything like high/low level. I think that was the setting I had to change.

Maybe also check with another cable first if you have. Ive had failing cables before.

 

[Doondoons]

Thanks for both responses.

It is connected with an RCA cable, that is a good shout, i may try replacing that cable with a better one!

I don't see any setting to change the power of the channel though, only the decebels or is that the same thing?

 

[everettT]

Hi all, i wonder if i could get some help.

I have recently upgraded my AVR to the Denon S760H hoping that it would fix my issue with my sub but it did not unfortunately.

on the bottom of my sub there is an LED which is red in stanby mode blue when recieving signal. i don't know if these are exactly the speaker set i own but certainly look similar Onkyo SKS-HT993THX so they are a good few years old now.

The Sub seems to come out of standby indicated by the blue LED but i get no sound at all. I can fix it by a simple power cycle so it's not the end of the world but where the sub is located in an awkward place so isn't ideal and would be great if i could fix it if anybody has heard of this or know what i can check to fix.

Thanks

Are your speakers set to small on the the Denon?

 

[Doondoons]

Yes, i ran the auto setup with the mic and it set them to that.

 

[mtrycrafts]

Thanks for both responses.

... i may try replacing that cable with a better one!
...

Don't think that will help.

 

[lovinthehd]

What was the pre-existing situation with the sub before you changed avr?

 

[Doondoons]

It was the same on the privous avr, The light would turn blue to show it was recieving signal but no sound until power cycled.

It seems that once the sub has gone into sleep it will wake up again and work, but if it was in sleep for a few hours it won't, until cycled.

 

[Syphirioth]

Don't think that will help.

Ye probably not. But one should rule it out before buying new gear like AVR and Amp/Speaker.

 

[Syphirioth]

Thanks for both responses.

It is connected with an RCA cable, that is a good shout, i may try replacing that cable with a better one!

I don't see any setting to change the power of the channel though, only the decebels or is that the same thing?

It more to be sure it not a damaged cable or something before getting new devices etc. Cables can act up at times. So either use the cable somewhere else and see if it works. Or use another cable on the sub to see if that changes anything. If not it is most likely the amp in the sub since you ruled out the AVR.

 

[Doondoons]

Yes, i am going to give the cable a go, i may even have one laying about somewhere.

If it is the amp in the sub, is that something i can DIY myself? i have wired up a car sub and amp before, is it the same or more to it than that?

 

[isolar8001]

on the bottom of my sub there is an LED which is red in stanby mode blue when recieving signal.

Thanks

From your manual...

• If the Standby/On indicator lights (both red and blue LEDs)
several seconds or minutes after the sound output stopped,
this means that the amp protection circuit has been activated.
In this case, set the OUTPUT LEVEL control to the center
position, and disconnect the power cord from the AC outlet.
Wait at least 10 minutes, and then reconnect the power cord.
If that doesn’t solve the issue, contact your Onkyo dealer

Like TLSGuy said, that amp is cooked and will fail totally soon.
Best cable in the world won't help anything.
Not worth fixing unless you are a tech with nothing else better to do.

 

[Syphirioth]

From your manual...

• If the Standby/On indicator lights (both red and blue LEDs)
several seconds or minutes after the sound output stopped,
this means that the amp protection circuit has been activated.
In this case, set the OUTPUT LEVEL control to the center
position, and disconnect the power cord from the AC outlet.
Wait at least 10 minutes, and then reconnect the power cord.
If that doesn’t solve the issue, contact your Onkyo dealer

Like TLSGuy said, that amp is cooked and will fail totally soon.
Best cable in the world won't help anything.
Not worth fixing unless you are a tech with nothing else better to do.

I gonna throw in one more probably "not at all whats going on" idea here.

Are your devices on different electricity groups? Are both connected to earth wires? @Doondoons

It probably the realy last straw you can check before getting new sub. And like @isolar8001 said. Fixing is not worth it unless you truly know about electronics and transistors and resistors and what not.

Anyways to give a side story to why I suggest this is because here in NL lot is grounded electronics. And things can be funky when it comes to grounded and not grounded or different groups. I had my amp kicking in protection before for no reason. Apparently it was some weird thing going with circuits or something. I not realy sure how to say in english. But this kicked in protection on amps. The other way arround I also had my amp turn off the breaker. This was fixed when I put all audio on same outlet.

Also I do not know this sub. So I not sure if protection can kick in cause of something like this.

But if they not connected to same wall outlets/groups you can always try see if it fix it or not to put them together.