Question about XRS 9730 Radar Detector

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Please Help I heard a "Popping" sound coming from my XRS 9730 Radar Detector when I turned my vehicle on. Now it doesn't turn on. Please help!

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Sounds like an internal fuse going. Did it happen while you were starting the car? Could be a surge....
How old is it, if you cant return it under warranty (may not be covered if they say its your fault) you can open it up carefully and check for fuses or blown components like resistors/capacitors etc

Posted on Apr 18, 2008

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Cobra xrs 9730


as far as i know radar is radar it all works on band width
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''I have a xrs 9730 radar detector and the speaker quit working''


Most likely the speaker simply blew due to excessive heat. This is a fairly common problem with all makes and models of radar detectors. Contact Cobra. They should either be able to send you a replacement speaker which you can install yourself, or they should issue you a RMA so that you can send in your Cobra for service.

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At the end of the power cord for the radar detector the end screws off and there is a fuse for the radar detector itself. Check it....

If that isn't the problem post back for further help.

Thank you for choosing Fixya!
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Mar 19, 2009 | ESD 6100 Radar Detector

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I dont understand


That may be because he does not have his radar unit activated. Radar units work by sending out a microwave signal. It bounces off your car and back to the unit. It then calculates the whole distance over time thing and figures out your speed...it's more complicated than that, but I don't feel like giving a class...and I'm not a real genius anyway when it comes to physics and whatever other -ics are involved with the science of radar. Point is...radar units have a hold function..kinda like turning that microwave beam on and off...when the officer has the radar on "hold" there is no beam coming out..which means, there is nothing for your radar detector to detect. When he takes it off hold to clock your speed, the magic beam shoots out, bounces off your car, and returns to the unit..then tells the officer your speed...by the time your radar detector actually lets you know you're being clocked, Mr. Officer is already turning around to come pull you over. Hence the reason radar detectors are a waste of money...but then again, there are plenty of cops that ride around with the the sending out a signal all day and never actually put it on hold...if a cop is using the radar properly, the radar detector in your car will not help you...but, not everyone does what they are supposed to do, so therefore, it may save you from one or two tickets.
Now, the reason it doesn't alert you when the police are right in front of you is because either the police in front of you; A)do not have a radar, B)do not have their radar on, C)they have it on "hold" and are not transmitting a signal, or D)your radar detector is broken and you need to get it fixed or replaced.

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Help!


If you live near a cell-phone tower, your radar detector can pick up on the waves coming from it. If you like in an area where radar detectors are legal and Ku band is not used, I recommend turning off the vg2, spectre and Ku bands on your detector. This will not only cut down on some of the "noise" but also make your radar detector more reliable for when you are actually "zapped" by law enforcement.

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I had the same problem. Took mine apart and glued the broken piece back with Gorilla glue. Been working great, even in the Texas heat for 4 months now.

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Probem with XRS 9675 Detector


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