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Old 04-09-2007, 07:35 PM   #1
waylandchin
 
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Hear noise when playing music with TomTom 910 through auxiliary audio input jack

I play music in my new Yaris through the audio input jack. The source is a TomTom 910. When I plug in the car charger for the TomTom, I hear noise, especially when I accelerate. If i unplug the car charger and have the TomTom run from the built in battery, the music plays fine with no noise. Does anybody know how to fix this problem? I want to play music with no noise while having the car charger for the TomTom plugged in.
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Old 04-09-2007, 07:55 PM   #2
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Quote:
Originally Posted by waylandchin View Post
I play music in my new Yaris through the audio input jack. The source is a TomTom 910. When I plug in the car charger for the TomTom, I hear noise, especially when I accelerate. If i unplug the car charger and have the TomTom run from the built in battery, the music plays fine with no noise. Does anybody know how to fix this problem? I want to play music with no noise while having the car charger for the TomTom plugged in.
You'll most likely need to get a ground loop isolator, it's feedback noise from powering the unit. The problem is, most ground loop isolators are pretty bulky and are in RCA form, so you'd have to get an adapter. Here are some pics of mine when I had my GTI:



You see how the one side that is going into the ipod charger has the headphone adapter, you'll need one of those on both sides, kinda sucks because you don't have place to hide the unit.
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Old 04-09-2007, 09:03 PM   #3
oneclickfixed
 
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Hey, I just bought a 910 2 weeks ago and have the same issue. I was thinking about hard wiring the power to the fuse box. Not sure if it is going to help.
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Old 04-10-2007, 08:22 AM   #4
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From what I've heard, all 12v accessory outlets are notorious for causing interference. I've got the same issue with my Sirius car unit. Gotta' get a filter for that thing...

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Old 04-11-2007, 03:08 AM   #5
waylandchin
 
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I'm trying this

I just ordered this on ebay.

http://cgi.ebay.com/ws/eBayISAPI.dll...9075&rd=1&rd=1

It's got great reviews on crutchfield. Even pilots use it for sattelite rado. So it should work on our Yaris. I'll let you guys know how it goes. Their seems to be two versions on ebay though. One that looks like the crutchfield one and one that looks similar, like the one I'm ordering. Don't know if it's bootleg though.
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Old 04-14-2007, 01:44 AM   #6
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i have notice the same noise when i used the auxiliary...i think the contact point is loose in the auxiliary port
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Old 04-14-2007, 04:26 PM   #7
waylandchin
 
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no, this happens with all cars with auxiliary ins. I think it's called a ground loop. when you plug in the car charger and the aux in you'll get a feedback loop. even airplanes have it. I got the ground loop isolator I mentioned on ebay earlier and it works great. no more noise. try it.
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Old 04-14-2007, 09:12 PM   #8
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yup, ground loop isolator...it should fix the problem!
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Old 04-18-2007, 12:00 AM   #9
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Well, I've finally found a use for those two little "pockets" on the sides of the center pillar:



I got this Targus Power Inverter:
http://www.targus.com/us/product_det...?sku=PAPWR005U

and put it in the pocket on the passenger side. When I plug my Garmin C580's power adapter into it, I don't get the noise anymore. Maybe it's because this Targus inverter has a built in surge protector and line conditioning.
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Old 04-18-2007, 07:37 AM   #10
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Quote:
Originally Posted by waylandchin View Post
I just ordered this on ebay.

http://cgi.ebay.com/ws/eBayISAPI.dll...9075&rd=1&rd=1

It's got great reviews on crutchfield. Even pilots use it for sattelite rado. So it should work on our Yaris. I'll let you guys know how it goes. Their seems to be two versions on ebay though. One that looks like the crutchfield one and one that looks similar, like the one I'm ordering. Don't know if it's bootleg though.
I just got mine from Crutchfield. Amazing! It eliminated all the noise I was getting from my XM. Definately two thumbs up!!
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Old 04-21-2007, 08:32 PM   #11
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Originally Posted by shagrat View Post
I just got mine from Crutchfield. Amazing! It eliminated all the noise I was getting from my XM. Definately two thumbs up!!
+1

I just drove up to Cruthfield this afternoon and picked up my Ground Loop Isolator and it works great! I can not recommend it enough.
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Old 04-22-2007, 12:25 AM   #12
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I had the same problem when charging my Nuvi. I went to Radio Shack and for under $20, had a ground loop isolater and necessary cables. Easy fix.
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