Question about Tao XM2go Satellite Radio Receiver
When I use the XM2GO line out into my car stereo line in, it works fine as long as I run it off of the XM2GO internal battery. If I connect the car power adapter, I get a high pitched noise at a level that competes with the level of the audio. It doesn't make any difference if the car engine is on or off ... same problem either way. I even get whining noises with the XM2GO turned off as long as the car power connector is plugged in. I didn't have any problem with the home kit using the external power adapter and the line out to amplified speakers, but using the car power adapter seems produces the high pitched noise which renders usage unacceptable. Any thoughts ?
I was ready to mention the car's alternator but you say the noise is there if the ignition is on or off. What type voltage adapter are you using? It sounds as if it's the culprit. If it's an inverter I could understand the noise being generated. Have you tried earthing ALL the components involved? Earthing problems can cause some mighty weird things to happen.\ Are you sure nothing else in the car is switched on? eg. another radio or something with an inbuilt oscillator. Try running the power for the adapter straight from the battery and put a noise filter in line. Are you turning the engine off but leaving the ignition switched on? Doing this can cause a noise from the fuel pump. Oh and make sure the antenna is correctly earthed. Apart from that, I'm stumped BMW
Posted on Jul 18, 2006
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