Taranis X9D plus humming noise

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Raythegreat
Posts: 176
Joined: Sat Apr 16, 2016 11:33 pm
Country: -

Taranis X9D plus humming noise

Post by Raythegreat » Sat Nov 03, 2018 4:07 am

Hi all,

I just bought a Taranis X9D plus two weeks ago, so it is brand new.
When turned on, I have a continuous weak but annoying humming sound noise coming out from the speaker.
My other Taranis X9D (not plus) bought 5 years ago does not make that humming noise and is still working well.
When I touch the antenna of the new Taranis plus, the humming noise decreases but is still there.

Any idea how to minimize this or eliminate it? None of my sound settings are at max, all 50% or less.

Ray

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Kilrah
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Joined: Sat Feb 18, 2012 6:56 pm
Country: Switzerland

Re: Taranis X9D plus humming noise

Post by Kilrah » Sat Nov 03, 2018 8:59 am

It's normal and depends on antenna orientation.

Raythegreat
Posts: 176
Joined: Sat Apr 16, 2016 11:33 pm
Country: -

Re: Taranis X9D plus humming noise

Post by Raythegreat » Sat Nov 03, 2018 3:57 pm

Hi Kilrah,

I don't have this problem with my other Taranis. At least I don't hear it.

Ray

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Kilrah
Posts: 9706
Joined: Sat Feb 18, 2012 6:56 pm
Country: Switzerland

Re: Taranis X9D plus humming noise

Post by Kilrah » Sat Nov 03, 2018 10:31 pm

Varies a bit from a unit to another.

Some people have done some mods and shielding I believe, but you'll have to search for them as I haven't followed, has never bothered me.

Raythegreat
Posts: 176
Joined: Sat Apr 16, 2016 11:33 pm
Country: -

Re: Taranis X9D plus humming noise

Post by Raythegreat » Sat Nov 03, 2018 11:10 pm

Thanks Kilrah,

This problem is probably caused by RF crosstalk on the cables harnesses inside the Taranis.
I have to change my joysticks anyway so I will add a small ferrite or two to the culprit cables.
Or simply move a cable just a little bit inside will at least diminish the noise.

Ray


Raythegreat
Posts: 176
Joined: Sat Apr 16, 2016 11:33 pm
Country: -

Re: Taranis X9D plus humming noise

Post by Raythegreat » Fri Nov 09, 2018 10:09 pm

Hi all,

Something interesting happened that I would like to share.

When I bought my Taranis plus I had the standard joysticks and the humming noise reported in this thread.
When I opened my Taranis plus to change the joysticks, I saw one ferrite and the big capacitor mod on DC power already applied but the noise was still present.

I changed my two joysticks to M9 hall effect joysticks and now the noise is reduced significantly to a point I need to put my ear near the speaker to hear the noise. So the buzzing is almost gone and is now very very weak.

That might be caused by the fact we don't have potentiometers to pick up RF noise and the hall effect joysticks reduce the electrical feedback noise.
Interesting.

I'm not making any conclusions here but just stating my situation.

Ray

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