Question about Sony XM-552HX Car Audio Amplifier

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XM-552HX ofside led turn yellow

When I disconnect the amp fuse and then reconnect again, work for a couple of seconds and then the ofside indicator the one in the middle turns from green to yellow and stop the sound in the woofers, what could be the issue?

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You may have an issue with the impedence of the woofers causing the unit to go into protection mode. Make sure that the woofers are no lower than 2 ohms at the amp. This can be done with a voltmeter to check. You are better off running the woofers at 4 ohms if possible. If you disconnect the speaker wire from the amp, does the yellow light still come on? If so, then there may be a problem with the amp.

Posted on Sep 28, 2008


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About the Nexrad problem. In the past I would need to refresh the XM receiver when this happened. XM walked me through it and I have the steps, but the links are no longer working. Maybe it is no longer required since the XM link now jumps to SiriusXM. I've not needed to refresh for a couple of years and I suspect they eliminated that requirement.
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1st step in erasing the memory is to turn the ignition off and connect the SCS Service connector to the MES Plug.

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4th Reconnect SCS service connector the MES connector within 4 seconds after SRS light comes on. SRS indicator light will go off.

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6th Turn ignition off, and wait 10 seconds. Start vehicle like normal and light should come on and go out like normal. You have reset your SRS light, congrats.

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1 Answer

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1 Answer

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