Question about Garmin StreetPilot c550 GPS Receiver

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Feedback please help I have the garmin c550 is giving off a high pitch sounds very loud please help THANKS

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I've not experienced that with any of mine gordonshere, but what have you tried to isolate the cause and do you have more information?
does the volume control have any impact?
is it a constant noise regardless of the function you're using?
have you tried to dim the back lighting?
is the turn by turn voice clear?
is it mounted close to another audio device?
does the music play with out significant distortion?
Are you using the bluetooth with a phone in close proximity?
Does it squeal while being charged?
Does it squeal while connected to a USB hub?

Posted on Jan 06, 2008


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Loud high pitch feedback when audio plays

I can only think of tree possibilities:

1. Feedback created by a dry join on a circuit board
2. Feedback from a cooling fan that has malfunctioned
3. Feedback from a microphone that has malfunctioned

I would try disabling or fiddling with the settings on the microphone first, if that's the problem, I recommend you disable it and if you use a microphone regularly, the external alternative is quite a cheap way of replacing it, if its a cooling fan, and you have the knowledge to disassemble the laptop, try disconnecting it for a short time, if the feedback stops when you disconnect the fan, you need only replace the fan, if these two methods don't solve the problem, I would recommend you have a professional look at it for you, dry joins are quite hard to find and require special equipment to fix, and if that's not the issue, the professional should be able to find the problem anyway.

Good luck

Mar 13, 2013 | Acer Computers & Internet

1 Answer


Hi Don,


You probably just need to find the reciept where you bought the C550.  Sounds like Garmin is protecting its customers when they say $300.  This is most unfortunate thing to happen to you.  Is the Garmin $300 issue as I thought and related to you not having the registration code or Reciept?



Oct 13, 2007 | Garmin StreetPilot c550 GPS Receiver

1 Answer

There is a horrible echo whenever i try to record and then there's a loud noice that sounds like a very high-pitched whistle and i don't know what to do.

This type of audio feedback loop can happen on any mic if you are playing back audio at a loud volume on speakers that are close to the mic while the mic is on - which tends to happen on Skype calls. Try lowering your speaker volume or using headphones to hear the audio, then speak into mic, and the feedback should be reduced.

Apr 12, 2012 | Labtec Microphone Microphone

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Forgot my pin for my garmin c550 gps, have'nt use in a long time.

You must call the factory to verify you have the unit - -and they will reset it remotely - this is to keep a thief from using it.

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There are replacement batteries available. Don't post in all caps please it is frowned upon.

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Aug 18, 2008 | Garmin StreetPilot c550 GPS Receiver

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Awful High-pitched Noise and Echo Feedback

Normal 0 Two things can cause static.
First, If you have your speakers turned up to high it will give you feedback causing distortion and static. I recommend using a headset when videoing.
Second reason is, if you are using a laptop and have added an external microphone between the two it will cause distortion and static.
Not knowing the configuration of your computer makes it harder to analyze the problem.
So hope this is of some help. Bud

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Feedback problem

Is there a spot you can install the Garmin that will reduce the heat build up within it? I've noted some audio issues (however not a loud high pitched sound) when my Garmin gets too warm from direct sunlight baking it (along with it's own internal heat build-up) I get a crackly, nasty sounding voice that goes away if I cool the unit down. I've since put mine on a stalk between the front seats out of direct sunlight, heater outlets and away from other audio output devices (heat and RF sources) and have eliminated any audio break down. Before I isolated the unit, allowing it to stay as cool as it could, I also noted that when one of my units gets very warm it would also drop satellite connection. Because of the delay you're experiencing (15 minutes) it sounds like a heat build up issue for you as well.

Dec 03, 2007 | Garmin StreetPilot c550 GPS Receiver

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How do you get rid of the Pin Number?

Refer Page 6 of Garmin C550 Owner's Manual. If you forget your PIN number, drive to your security location where you set the PIN and this will unlock the unit. Richard New Zealand

Jun 16, 2007 | Garmin StreetPilot c550 GPS Receiver

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