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Aux Jack Interference/Buzzing via GVIF
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Hardware17
 


Member Since: 28 Jun 2016
Location: Manchester
Posts: 1681

England 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

you could try putting ferrite beads on the cables. should cut down the interference.
  
Post #187367130th Oct 2017 10:33 am
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CY
 


Member Since: 16 Aug 2005
Location: Warwickshire
Posts: 4315

Scotland 2008 Discovery 3 TDV6 HSE Auto Tangiers OrangeDiscovery 3

M3DPO wrote:
In that case you just need to disable the AV inputs with the dip switches, take a photo/note of them before you start as they can be a pain if you get it wrong. Thumbs Up


This sounds promising, as I definitely don't need any audio inputs into the GVIF (like DVD player/TV etc.) if I can continue using my old fashioned aux cable solution for music. I'll take a look......

Also noticed that the buzzing pretty much only comes out of the N/S front door speaker Confused

Thanks all for your help so far Smile
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Post #187409131st Oct 2017 11:19 am
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CY
 


Member Since: 16 Aug 2005
Location: Warwickshire
Posts: 4315

Scotland 2008 Discovery 3 TDV6 HSE Auto Tangiers OrangeDiscovery 3

Okay just tried that, as I happen to have the D3 at work with me today.

I tried switching off each input switch one by one, however none of them stopped the buzzing... But then when I pull out the main A/V In/Out cables it goes blissfully quiet! But then I don't have my reversing camera... Big Cry Banging Head
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Post #187411431st Oct 2017 12:03 pm
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Hardware17
 


Member Since: 28 Jun 2016
Location: Manchester
Posts: 1681

England 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

in this thread ... http://www.disco4.com/forum/topic164527.html ... when DSL found a ferrite bead rolling around under his seat, it turned out to be from his dashcam which came with it to suppress audio interference caused by the dashcam.

gotta be worth trying ?
  
Post #187412231st Oct 2017 12:14 pm
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Bodsy
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Member Since: 06 Nov 2006
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United Kingdom 2007 Discovery 3 TDV6 HSE Auto Java BlackDiscovery 3

Is the buzzing still there when you unplug both of the USB adapters in front and middle?
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Post #187420431st Oct 2017 3:19 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 4175

England 2005 Discovery 3 TDV6 HSE Auto Baltic BlueDiscovery 3

You must change a dip switch while the power is off and the car is asleep, (park brake light out) or allow the car to sleep after the switch has been changed, it will not have any effect if you don't, but by doing this you are only overcoming another fault.
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Post #187421231st Oct 2017 3:42 pm
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fusion158
 


Member Since: 08 Apr 2014
Location: California
Posts: 12

United States 2005 LR3 4.4 V8 SE Auto Bonatti GreyLR3

Are you getting the buzzing when the aux cable is not plugged in or when it's plugged in to your audio source?

I had the issue when the cable was plugged in to my phone and my phone was charging. It turned out the be a ground loop issue. I solved it but installing a ground loop noise isolator.

https://www.amazon.com/Mpow-Ground-Isolato...B019393MV2

It still will buzz a little if the aux cable is unplugged from my phone but that doesn't really bother me.
  
Post #187431331st Oct 2017 8:11 pm
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