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Entire right side speaker system not working

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.
1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
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Entire right side speaker system not working

Postby Dagmar » 05 Jan 2011, 22:32

So, I removed my SC-816 stereo from my 1998 Volvo V70 wagon in a futile attempt to replace the bulbs since I was getting tired of turning on the interior lights to push a button on the radio at night. Long story short, I was not able to replace the bulbs and instead just reinstalled the radio and called it a day, telling myself I'd install an aftermarket when I got the chance.

However, upon powering the radio back on and entering the programming code I noticed my entire right side speaker system no longer worked. My left side however, all the way back to that tinny little speaker on the rear pillar by the hatch, worked perfectly. I removed the radio again and then reattached all the plugs as snugly as I could and still no sound out of the right side.

I only noticed 4 plugs in total to the back of my stereo, 2 wide multi-pin plugs with many colored wires coming out and then two antenna plugs. Am I missing one?

Did I blow an amp of some sort? If so, where is the amp for the right side? Any help would be much appreciated as I'm not too incredibly knowledgeable with car audio. :(
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Model and Year: V70, 1998

Re: Entire right side speaker system not working

Postby billy » 05 Jan 2011, 23:06

Did you check to insure the" balance" was not accidentally changed with all the in and out action? "Balance" usually controls left to right sound and "fade" controls front to back to back sound. The two wide multi-pin- plugs you mentioned supply all the action you are speaking of.
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Re: Entire right side speaker system not working

Postby FCPGroton » 05 Jan 2011, 23:52

If it is not the balance, it could be the amp. Had the same issue on my 940 back in the day. The left side of the amp burned up on me.
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Re: Entire right side speaker system not working

Postby Dagmar » 06 Jan 2011, 20:09

Hey guys, just here to close this topic and show how stupid I can be sometimes. It was in fact, as mentioned, the balance. I was not aware I could even control the balance through the volume knob, with this being a new car and having a LOT more buttons than my previous vehicle, a '98 Chevy S10. Thank you very much though.
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Joined: 05 Jan 2011, 22:22
Location: Georgia
Model and Year: V70, 1998


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