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Mitsubishi RCA Jack Bad Interference
Mitsubishi RCA Jack Bad Interference
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Old 14th February 2020, 12:18 PM   #1
milko is offline milko
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Join Date: Feb 2020
Default Mitsubishi RCA Jack Bad Interference

Hi all,

I have pretty much zero knowledge in this area but would love to work this issue out with your expert help.

I have a 2009 Mitsubishi Pajero (Australia) with a stock stereo system, MMCS head unit, Rockford Fostgate sound system and a roof mounted DVD player. I believe the same system is used overseas and in America in the Mitsubishi Outlander.

I have an RCA jack in the cargo area of my vehicle that I want to use to play music from my phone and also run a video game console.

Whenever I use a 3.5mm to stereo RCA I get extremely bad static. If I use a games console with the RCA I get a blurry almost colourless image and NO sound at all.

I have used multiple cords, devices and a ground loop isolator. When I use the ground loop isolator on the 3.5mm I get NO sound.

I believe I've narrowed it down to only the cable that runs to the roof mounted DVD player unit from the rear RCA jack. As when I play DVD from this unit the sound and image that is transferred to the front head unit are fine.

The front head unit plays CD's and radio without issue.

I'd love some ideas of what to look at and try in order to solve this issue!

Thanks in advance for your help!
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Old 14th February 2020, 01:20 PM   #2
JonSnell Electronic is offline JonSnell Electronic  United Kingdom
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Join Date: Dec 2012
Location: The Jurassic Coast, England. GB
If you use a machine powered from your vehicle you may get all sorts of issue from ground loops etc.
I would firstly use an audio isolating transformer and see if that clears the problem.
Something like this will do;
Audio Matching Transformer, Centre Tapped on Both Sides, Various Types | eBay
Support for Fender, Marshall and all Valve Equipment; Audio Innovations, Audiorama FU29, Quad and Leak. www.jonsnell.co.uk
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Old 14th February 2020, 04:01 PM   #3
Perry Babin is offline Perry Babin  United States
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Join Date: Nov 2003
Location: Louisiana
Rockford amplifiers?

What happens if you plug the 3.5-RCA directly into the amp?
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
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