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Tailgating TV Audio Issues

Tags:
  • TV
  • Audio
  • Do It Yourself
Last response: in Home Audio
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October 8, 2014 1:18:49 AM

I'm trying to DIY a tailgating set up to run my TV audio through an old car stereo (not installed). The stereo is a Pioneer DEH P-3300 powered by a computer power supply unit (yellow to power, black to ground with the green spliced into the ground). The TV is a 32" Vizio flat panel LED with a headphone jack audio out. The TV audio out is connected to the stereo through headphone jack to the Pioneer IP-BUS input. When I connect the set up to my phone or iPod, the sound is clear, no noise. However, when I connect the set up to the TV, I get an alternating hum. I suspect it is a ground loop issue based on my research. Wondering if anyone has any other ideas. Thank You.

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a b x TV
October 13, 2014 12:40:26 PM

Sounds like a ground loop. Try using a 3 to 2 ac adapter to break the ground connection on the power supply AC cord. If that is not acceptable one of these can help:
http://www.amazon.com/PAC-SNI-1-3-5-3-5-mm-Isolator/dp/...
If you have cable you can also get a loop from that. Disconnect the cable from the wall while it is humming and it might go away. Then you can use a different isolator like this
http://www.mcmelectronics.com/product/33-8700?scode=GS4...
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