Question about Garmin StreetPilot 2720 GPS Receiver

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Garmin 2720 lost sound

My Garmin 2720 has recently developed a problem of losing its ability to "speak."

Switching the unit on normally and asking for it to provide directions to a given location, the unit begins performing normally. But after 5 to 10 minutes of normal operation, a spoken direction will be garbled, and then after that there is no sound at all.

Immediately switching the unit off and then on has no effect. Leaving the unit off for several hours will result in the pattern above where it works for a little while and then goes silent.

Any ideas?

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  • rigarunner Jan 26, 2009

    Thanks for a good suggestion which may be relevant regarding heat, but in the speaker unit. I have solved the problem by purchasing a new power cord/speaker unit -- everything is working perfectly. I have to conclude that the previous power cord/speaker assembly was the culprit.

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  • 7 Answers

It sounds like the audio power amplifier is failing in the unit, it's kinda classic for an audio amplifier to fail when it gets hot, then work again when it cools down.

I'd suggest deleting the language you're using, then reload v7.2 firmware and the language. No reason why this should work, but it doesn't cost anything. If not you're looking at a $250 Garmin flat rate repair.

Posted on Jan 24, 2009

  • Tom 2720 Jan 26, 2009

    Of course! The speaker wires shorting together would cause the audio amplifier heat up, and all good amplifier circuits have a thermal shutdown feature. Sorry I didn't suggest that. Glad you found it. Tom

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