Bose Radio AM, FM, Ant., & 6CD work, but NO SOUND!
Junior Member
Joined: Mar 2019
Posts: 2
Likes: 0
From: Wigan
Yep, even on a couple of bad days I would hear those cracking/knocking sounds. That video was the point where I knew it was the amp, I fixed mine, hasn’t missed a beat since. Pull that amp out and follow the steps I went through towards the end of this thread here for a fix under $100
https://forum.mazda6club.com/car-ele.../topics/252151
https://forum.mazda6club.com/car-ele.../topics/252151
Junior Member
Joined: Jul 2019
Posts: 2
Likes: 0
From: Adelaide
My CX9 2008 Bose System went quiet the other day. Head unit seem to be working but no sound at all in any mode. Check the bose fuse in the engine bay and no issues there. However I noticed the negative terminal on the battery was a bit corroded. So I disconnected the lead, cleaned it up and reconnected. Audio sound is now back.
In my case either the head unit needed a reboot as it did this after recoonecting the battery or the cars ground system was not perfect for the Bose system.
In my case either the head unit needed a reboot as it did this after recoonecting the battery or the cars ground system was not perfect for the Bose system.
Junior Member
Joined: Jul 2019
Posts: 2
Likes: 0
From: Adelaide
Hello
I have an 08 CX9 with intermittent sound issues with the Bose system. I suspect its a power amp issue but have no idea where it is located to troubleshoot.
Where is the amp located?
I have right hand drive Australian delivered CX9.
I have an 08 CX9 with intermittent sound issues with the Bose system. I suspect its a power amp issue but have no idea where it is located to troubleshoot.
Where is the amp located?
I have right hand drive Australian delivered CX9.
Junior Member
Joined: Apr 2020
Posts: 1
Likes: 0
From: Utah
05 rx8 with same problem
I have the same issue with my main driver speaker in my 05 rx8. It would cut in and out whenever there was excessive vibration from either the speaker itself or from the road. I took it to a popular speaker place in my area and they thought they knew what was wrong. The part that is the issue is a little black box that is probably the amp for the speaker. Due to the fact that it is what they called a factory part they wouldn't touch it. My guess is that the box has trouble staying connected or is not well made and breaks easily, but my guess is that it sucks at staying connected because the problem went away for about a week or so after they fiddled with it and plugged the speaker back into it.
Last edited by Diunecg; Apr 6, 2020 at 02:41 PM. Reason: Extra info
Junior Member
Joined: Jul 2020
Posts: 2
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From: Dfw
Solution
I have experienced the NO SOUND issue intermittently. After playing around with the buttons I discovered a consistent solution that works for my no sound issue:
Press and hold the power button + the seek up button at the same time. A new screen will appear then press and hold the power button + setup button at the same time until the screen goes dark. It will come back on automatically and your sound will work again. Let me know if this works for you.
Press and hold the power button + the seek up button at the same time. A new screen will appear then press and hold the power button + setup button at the same time until the screen goes dark. It will come back on automatically and your sound will work again. Let me know if this works for you.
Junior Member
Joined: Jul 2020
Posts: 2
Likes: 0
From: Dfw
Solution
I have experienced the NO SOUND issue intermittently. After playing around with the buttons I discovered a consistent solution that works for my no sound issue:
Press and hold the power button + the seek up button at the same time. A new screen will appear then press and hold the power button + setup button at the same time until the screen goes dark. It will come back on automatically and your sound will work again. Let me know if this works for you.
Press and hold the power button + the seek up button at the same time. A new screen will appear then press and hold the power button + setup button at the same time until the screen goes dark. It will come back on automatically and your sound will work again. Let me know if this works for you.
Junior Member
Joined: Jun 2021
Posts: 1
Likes: 0
From: Danville Virginia
12 volt
Yes. when you manually close the relay I got music (radio and CD) all speakers worked.
Thank you for your reminder that the ant power is only for the radio. You're right, the CD is not going to work if I do that.
So, now I have to keep searching for a 12v source when the head unit is on. I will try to test the CD connector or the speaker connector to see if I could find it over there.
If not, I'm think just connect a switched 12v from the fuse box to the relay. This way, when the car is running, then the AMP is on even the radio is off. Most of the time, I will turn on the radio or CD anyway.
The last resort will be the manual switch.
Thank you for your reminder that the ant power is only for the radio. You're right, the CD is not going to work if I do that.
So, now I have to keep searching for a 12v source when the head unit is on. I will try to test the CD connector or the speaker connector to see if I could find it over there.
If not, I'm think just connect a switched 12v from the fuse box to the relay. This way, when the car is running, then the AMP is on even the radio is off. Most of the time, I will turn on the radio or CD anyway.
The last resort will be the manual switch.
Junior Member
Joined: Aug 2021
Posts: 1
Likes: 0
From: Maryland
I have experienced the NO SOUND issue intermittently. After playing around with the buttons I discovered a consistent solution that works for my no sound issue:
Press and hold the power button + the seek up button at the same time. A new screen will appear then press and hold the power button + setup button at the same time until the screen goes dark. It will come back on automatically and your sound will work again. Let me know if this works for you.
Press and hold the power button + the seek up button at the same time. A new screen will appear then press and hold the power button + setup button at the same time until the screen goes dark. It will come back on automatically and your sound will work again. Let me know if this works for you.
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