Question about JBL - MR4W Am/Fm with CD Player White

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Stero will turn on but sound will not come out speakers. Was working, then turned the power off, when I turned it back on it the speakers wont work

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  • auxpower May 31, 2010

    So, this can be a complicate problem. You need to add some information about how the system is hooked up. What kind of vehicle? Is the JBL head unit run directly to the speakers? Is there an amp for the speakers in between? Does the unit run through any factory amplification that was part of the vehicle?



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Maybe the audio amplifier are damaged and need to be replaced

Posted on May 31, 2010


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I found out that it was simply my speaker connection. That is, it seemed like a good contact, but in fact the stero was reading "pulsing" from the speakers and shutting off to protect itself. I simply cleaned off the wires and carefully reconnected them.

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Please update your post with any Model Numbers that you can retrieve, especially the subwoofer. Off hand, and with the limited amount of information that you have provided, I would GUESS that your subwoofer is simply overheating, and is being shutdown internally, hence protecting the fuse because no short is detected. If you haven't moved and or vaccuumed/cleaned around or near your system regularly, dust, pollution, name it, builds up and can easily prevent electronics from breeathing/venting properly.

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What if you tap the side of the set when is doing it only to see if it reacts,if it does the you know you have a loose conection,sometimes you have a separate board for the stereo amp and the speakers conector plugs in ,sometimes in all in the main board and the speaker wires conect to the jack panel,The speaker conector is a good place to start.Be careful.

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