Question about JVC KD-G120 CD Player

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No sound!! I installed evertything correctly even speaker wires but i get no sound!

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Http://resources.jvc.com/Resources/00/00/91/GET0330-001A.pdf
Page 13 is the trouble shooting for this.

Posted on Feb 03, 2009

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It sounds like you may have the negative and positive polarity wrong usually to the speakers. I suggest to use black for negative and red for positive so that each speaker is correct. Speaker wire is good but for self installs its a common mistake.

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I have power, its grounded, illumination, everything, reads my cds and ipods and even scans radio no problem but the problem is that i have ZERO sound from the speakers all wires are correctly hooked...


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It sounds like they messed up your installation. You can confirm their work by verifying that each wire was attached properly.

2005 Pontiac Sunfire Car Radio Wiring Diagram Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
Car Stereo Amp Trigger Wire: Pink
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Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

Click on this link for a PDF of the installation instructions of the radio (If you don't have the installation guide that came with the radio).

Illumination is the grey wire from the car to the orange with white stripe from the radio.

I suspect that the yellow wire from the car is not connected properly. When the orange wire (constant power from the car) is attached, but not the yellow wire you can insert and eject cds, but it will not turn on. Constant power is used for maintaining the clock and preset radio stations.

If everything looks correct, I would take your car back to the installer and have them correct the issue.

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If you are using the speaker out wiring (not RCA) then disconnect all speaker wires. connect only one speaker or use a known good test speaker. Try each of the 4 speaker outputs. If none still do not work, then it sounds like a blown output chip which will need to be replaced.

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Sounds like the woofer cones are blown, no fix for that except to replace them.

You did the right thing disconnecting one at a time. Are both speakers doing that? It is a little strange that both would go out at the same time, but stranger things have happened.

If you have an extra speaker laying around someplace that you know is good (even a home stereo speaker), try disconnecting both speakers and connect the one good one to see if it sounds OK. If it sounds good or at least normal, you have some bad speakers. If the one speaker still sounds bad, you have a problem with the speaker wiring someplace. You might even need to run new wires just to rule them out as a problem.

If the problem is not the speakers, then this is a very strange problem indeed!
Good luck and I hope this helps you. If you need more help just reply back after you checked them out a little more.

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You may have one of this two problems:
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