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.
Tailgating TV Audio Issues
- Thread starter ninerfan1
- Start date
-
- Tags
- Do It Yourself TV
Solution
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/B001EAQTRI
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=GS401&catargetid=530004080000291210&cadevice=c&gclid=CJeGlKGsqsECFQ9p7Aod3lIARA
http
/www.amazon.com/PAC-SNI-1-3-5-3-5-mm-Isolator/dp/B001EAQTRIIf 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=GS401&catargetid=530004080000291210&cadevice=c&gclid=CJeGlKGsqsECFQ9p7Aod3lIARAamericanaudiophile
Titan
- Aug 27, 2008
- 14,933
- 146
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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/B001EAQTRI
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=GS401&catargetid=530004080000291210&cadevice=c&gclid=CJeGlKGsqsECFQ9p7Aod3lIARA
http
/www.amazon.com/PAC-SNI-1-3-5-3-5-mm-Isolator/dp/B001EAQTRIIf 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=GS401&catargetid=530004080000291210&cadevice=c&gclid=CJeGlKGsqsECFQ9p7Aod3lIARASimilar threads
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