Question about Cobra 4000 GPS Receiver

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Ticking sound turn cobra 4000 on and it beeps but still has black screen. It sounds like it is ticking. GPS says at time device not found..

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We have a similar problem which was from a bad coed to receiver connection.
Try holding the point to where you hear the 'tick' and wait for the connection.

Posted on Oct 28, 2008

  • pauldawg Oct 03, 2010

    My 4000 unit does the same thing... it has an internal hard drive and the hard drive is not functioning properly

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1. First, make sure that the sound is not checked to be muted.
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http://www.retrevo.com/search/

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Plug the unit it and leave it plugged in for a while, make sure to keep it off.

Let the power stay on the unit for a while, like 20 mins or so and then try it again.

I think that the unit has an internal battery like your alarm clock and when the power goes out the battery takes over. I beleive in your case the battery may be dead.

The same thing happened to mine.

Let me know.

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