VGA Adapter & LCD TV Noise

Hi,
When my iBook G4 is connected via the VGA adapter to the VGA port on my LCD television, there is an audible hum or buzz emitted from the LCD television speakers. This occurs whether or not I have connected the iBook G4 headphone port to the LCD PC audio port, confirming that it is a VGA connection issue and not an audio connection issue. Please note that I am using the well-known screen spanning hack to enable both spanning and external resolutions higher than 1024 x 768.
Has anyone experienced a similar issue with the VGA adapter? Is there any consensus on the quality of the VGA adapter?
Thanks,
Rob

The most likely cause for an issue like this might be
if both ends of the power plugs are not grounded
correctly. You might be able to test this by running
the iBook on battery power only and not plugged into
the AC power adapter. Does the sound happen both on
battery power and when plugged in with the adapter?
-Doug
Hi Doug,
I did troubleshoot for ground loops and was still not able to eliminate the hum. It turns out that my LCD TV speakers are emitting a hum regardless of the signal source. I have confirmed that it is a defect with my LCD TV and not the iBook G4 or VGA adapter.
Thanks,
Rob

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