Noise when using Ipod Charger
Thread Starter
Member
Joined: Dec 2006
Posts: 161
Likes: 1
From: Endicott NY
2014 ML350 Bluetec, 2016 GLC 300, 2023 Corvette, Z51 Stingray
Noise when using Ipod Charger
I have an IPOD and use the Aux inpt to listen to music. I have the IPOD car charger but when I plug it in and use the IPOD I get a low whine through the speakers. If I disconnect the charger the noise goes away.
Any information would be greatly appreciated.
Mark
Any information would be greatly appreciated.
Mark
MBWorld Fanatic!
Joined: Dec 2004
Posts: 3,063
Likes: 26
From: Tampa, FL
2005 S500 4-Matic, 1978 450SL
It is likely alternator whine transmitted through your cigarette lighter. The sources of such a whine can be numerous, but a common one is inadequate grounding of the engine to the chassis (often because of corroded grounding straps).
Thread Starter
Member
Joined: Dec 2006
Posts: 161
Likes: 1
From: Endicott NY
2014 ML350 Bluetec, 2016 GLC 300, 2023 Corvette, Z51 Stingray
Thanks
Thanks for the input. I will check the ground and any evidence of Corrosion but the car is new. Although, the main ground fron the engine to the chassie may be loose.
Have a great holiday.
Mark
Have a great holiday.
Mark
Member
Joined: Mar 2004
Posts: 170
Likes: 0
From: San Francisco Bay Area
2003 SL500
I had a horrible hum on mine from day one. I think it is a ground loop problem in the MB audio system. Try a ground loop isolator (Radio Shack sells one, there may be other sources)
MBWorld Fanatic!
Joined: Dec 2004
Posts: 3,063
Likes: 26
From: Tampa, FL
2005 S500 4-Matic, 1978 450SL
ToonArmy,
Thanks for your additional suggestion. A line isolation transformer (ground loop isolator) could help. His problem doesn't occur unless he is charging the iPod, so I don't believe it's a radio grounding problem as much as chassis. But, despite their bulk and (possibly) having to make a number of connections, to adapt the 3.5mm stereo plugs used on the iPod and the Aux input, to the RCA jacks commonly used on the transformers, it could work.
Thanks for your additional suggestion. A line isolation transformer (ground loop isolator) could help. His problem doesn't occur unless he is charging the iPod, so I don't believe it's a radio grounding problem as much as chassis. But, despite their bulk and (possibly) having to make a number of connections, to adapt the 3.5mm stereo plugs used on the iPod and the Aux input, to the RCA jacks commonly used on the transformers, it could work.
