Power noise

**regression** · 10-03-2012, 09:20 PM

I have my phone connected to my aux input in my car. Works great. However, if I plug in the car charger, there is a loud hum coming though the car speakers. I have tried a different charger but the same results.

Has anyone run into this before? Wondering if there is a filter is could get to eliminate the noise. Thanks.

Sent from my Nexus 7 using Tapatalk 2

**patrao_n** · 10-04-2012, 12:47 AM

Is your stereo grounded correctly? I have no problems using mine. Hooked up to my eclipse with one of the newer pioneer radios. Also check your ground where your cigarette lighter hook up is. Wish I knew more to help you.

sent from my BAD A$$ Epic touch

**patrao_n** · 10-04-2012, 12:48 AM

Is there any hum when just using the cat charger and not hooking it up through auxillary?

sent from my BAD A$$ Epic touch

**regression** · 10-04-2012, 07:04 AM

Originally Posted by patrao_n

Is your stereo grounded correctly? I have no problems using mine. Hooked up to my eclipse with one of the newer pioneer radios. Also check your ground where your cigarette lighter hook up is. Wish I knew more to help you.

sent from my BAD A$$ Epic touch

Thanks for the reply. I assume it is grounded correctly, it is the factory radio in the car. How would I check the ground?

No, if I don't have a cable plugged into my phone, I don't hear the hum.

**TauntingBull** · 10-04-2012, 07:16 AM

Originally Posted by djs71a

I have my phone connected to my aux input in my car. Works great. However, if I plug in the car charger, there is a loud hum coming though the car speakers. I have tried a different charger but the same results.

Has anyone run into this before? Wondering if there is a filter is could get to eliminate the noise. Thanks.

Sent from my Nexus 7 using Tapatalk 2

Thanks for bringing this up... I have the exact same issue... cant figure out the solution.

**patrao_n** · 10-04-2012, 08:06 AM

It may be your auxillary cord. Although if two of you have the problem then its likely interference. You would need a filter between your phone and the unit. I have never needed it so I couldn't tell you which one. Goodluck guys

sent from my BAD A$$ Epic touch

**regression** · 10-04-2012, 12:47 PM

I may pick up something like this and see if it fixes the problem:

Amazon.com: PAC Ground Loop Isolator for 3.5 MM Applications: Car Electronics

**regression** · 10-05-2012, 06:14 PM

I got this in the mail today:

PAC Ground Loop Isolator for 3.5 MM Applications

I works like a charm. The annoying hum is gone.

**TauntingBull** · 10-06-2012, 08:36 AM

Originally Posted by djs71a

I got this in the mail today:

PAC Ground Loop Isolator for 3.5 MM Applications

I works like a charm. The annoying hum is gone.

Thanks bud.... Im gonna order it as well...

**GiantJay** · 10-07-2012, 07:14 AM

I might have to try this.

Sent from my Nexus 7 using Tapatalk 2

**Bassem Hossam** · 12-30-2012, 05:31 PM

I have noise comes through my audio car system when it's on the aux mode is it normal?

**regression** · 12-30-2012, 06:45 PM

Originally Posted by Bassem Hossam

I have noise comes through my audio car system when it's on the aux mode is it normal?

Does it have the noise if the device plugged into the aux jack is being powered by a car charger?

**Bassem Hossam** · 12-30-2012, 07:52 PM

No without pluging any devices

**regression** · 12-30-2012, 08:01 PM

Originally Posted by Bassem Hossam

No without pluging any devices

Hmm, sounds like there is a problem with the stereo. This isn't too expensive. You might try it to see if it solves the problem:

PAC Ground Loop Isolator for 3.5 MM Applications : Amazon.com : Automotive

**Skull Nokker** · 12-31-2012, 08:52 AM

It could be that the radio input is a "floating" ground, which means that it is the ground in the radio circuitry but not connected to the car's ground. Is it actually a hum or is it a whine that varies in pitch with the engine speed?