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Problem: Image on the video output (TV) and VGA monitor appears dark
General - Product Support
Date Created
11/11/2003 11:50:32
Date Updated
11/10/2005 12:41:59
Problem: Image on the video output (TV) and VGA monitor appears dark

Cause (1): The unit thinks no monitor is attached, and is terminating the RGB signals itself. Since the VGA monitor is also doing this, the RGB signals become darker than normal. On overlay units, this can prevent the luma-key from working properly. Pin 11 on a VGA monitor's 15-pin plug should be grounded to tell the VGA card (or our unit) that a connection is made, but sometimes this is either not present or broken.

Solution (1): Most CORIO units have a feature under the Advanced menu called "RGB Term.", and turning this Off will prevent our unit from terminating the RGB signal - thus curing the problem. Other units affected do not have any such adjustments, so you should either try another VGA monitor, or contact the VGA monitor's supplier.


Products affected (2): CORIOscan Pro, serial number 00860 and earlier.

Cause (2): A change to the way the VGA IN and VGA OUT connections are linked within the unit means you must use the correct cable for these units.

Solution (2): Use the grey cable supplied with the unit, and not any other cable.

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