Vidikron VL-52, VL-57 manual Computer Signal

Maintenance and Troubleshooting

Table 5-1. Troubleshooting Chart (continued)

Symptom		Possible Cause(s)		Solution
Picture is okay, but there is no	•	Audio output is muted.	• Press the MUTE button on
sound.				the remote control.
	• Volume setting is too low.		• Turn up the volume.
	•	Source component is	• Check audio connections to
		connected incorrectly or		source component.
		not at all.
	•	Speakers are connected	•	Check speaker connections
		incorrectly or not at all.		(Figure 3-8).
	•	Audio settings are	•	Check the following
		incorrect.		settings: Digital Audio Out
				(page 34), TV Speaker
				(page 34) and HDMI Audio
				(page 39).

Image is too bright and/or lacks definition in the bright areas of the image.

• Contrast is set too high. • Lower the contrast setting.

Image appears “washed out” and/or dark areas appear too bright.

Black or white dots appear on all channels or a specific channel.

• Brightness is set too high.	• Lower the brightness
	setting.
• Antenna or cable TV source	• Check the antenna or cable
is connected incorrectly or	TV connection.
not at all.
• Broadcast signal is weak.	• If using an off-air antenna,
	adjust its position or
	location.

Colors in the image are	• The Red/Pr, Green/Y or	• Ensure that the source
swapped; for example, reds	Blue/Pb outputs from the	outputs are connected to
appear blue or vice versa.	source are connected to the	the correct DView input.
	wrong inputs on the DView.
RGB-HD images appear	• Clock and Phase settings	• Manually adjust Clock and
“noisy.”	need adjustment.	Phase settings, or perform
		an Auto-Adjust (refer to PC
		Mode Adjust on page 36).
“Invalid mode” appears	• The resolution and	• Select a compatible
on-screen.	frequency of the video card	resolution and vertical
	in the computer are not	frequency (refer to
	compatible with the DView.	Computer Signal
		Compatibility on page 61).
The image is too large or too	• Image size needs adjusting.	• Adjust the image size (refer
small.		to PC Mode Adjust on
		page 36).
Poor broadcast sound quality.	• The sound quality of a	• Use the MTS/SAP button
	stereo broadcast may be	on the remote control to
	unstable in an area with a	select mono.
	weak signal.

50 Vidikron VL-52 and VL-57 Owner’s Operating Manual