Xenarc 1020TSV Video Noise Ground Problem
I have video noise that I believe is due to a grounding problem. But I think it is a serious issue with my monitor.
My monitor is getting negative power from the VGA input from my CarPC and from my RCA video input from my head unit. If I only have the positive power lead on my power input attached and do not have the negative attached, I will still get the monitor powered with attaching either video source. Is this normal or is this a defective monitor?
I have run noise filters on the power sources to no avail. I have not hooked all devices to the same ground source yet, but I do run the LCD and CarPC off the same Carnetix 2140 power supply. However, I can't believe that I would get negative ground through video cables. Is there some short inside my monitor?
Thx for your input!