I have a DTC-100 connected to my 36SDX01S. I have both RGB/VGA and S-video connections. HD programs look way better via VGA. SD (regular NTSC TV) looks better to my family via S-video because it looks more like "normal" TV.
Before the 4.037 DTC-100 software download, I had to adjust the 36SDX01S horizontal placement in VGA monitor mode to an extreme, but the software update reversed that effect.
I am very pleased with both OTA HD and DTV ch 199 HD quality using this combination in the RGB/VGA mode.
This is going to sound very lame but here it goes. I also have the same setup you have but I have audio issues. When you are watching the DTC 100 through the VGA input on the back of the hitachi, where are you routing the audio? What is the corresponding audio inputs from the DTC 100 to the Hitachi?
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