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12.0
Random noise in video image
White noise
Hum on all channels
Ghosting
Image is always green
Image does not fit screen
Computer image jitters
Computer signal does not lock
Image flickers
No Communication
‘ERROR’ is always received
Side by Side does not accept a source
No OSD -
Troubleshooting
TV Tuner
Overall Image Quality
RS-232
PiP Modes
On Screen Display
- Check antenna position or cable connection. Weak signals can
cause noise. Use of an RF Signal amplifier may help. Check the TV Source setting in the menu for
proper selection between broadcast, cable, IRC, and HRC.
- Check antenna position or cable connection. Check the TV Source setting in the
menu for proper selection between broadcast, cable, IRC, and HRC.
- Poor grounding will cause this problem. The cable feed should be grounded
at entry into building or house structure. Jensen Transformers model VR-1FF CATV Ground Isolator
may also do the trick if the ground problem can not be found.
- Check antenna position. Sometimes to much gain from the cable source can cause
this type of problem. Radio Shack sells 3dB and 6dB attenuators that might help.
- Display output is set to YPbPr mode instead of RGB.
- Try adjusting the horizontal and vertical size in the XTune menu.
- Try adjusting the clock and phase for the input or press F2 for Auto Adjust.
- Make certain the output driver of the PC conforms to the input
listing of the XTune. Try to use VESA standard modes as the XTune is programmed for most VESA
standards up to 1024 x 768.
- This can happen if 2 video sources are selected for the Main and PiP. (Example: S-
Video is the Main and TV is the PiP.) This situation can only happen via RS232 control if the program
allows the selection to occur.
- Make certain PC or control device is set to 9600 8N1.
- Some terminal programs send both carriage return and line feed (0Dh,
0Ah) when the enter key is pressed. Make certain it only sends carriage return (0D hex). When writing
code try to put a 0Dh 100ms before sending a XTune command to make certain the buffer is
empty.
- Depending on the output vs the input resolution the unit
will not accept certain inputs in the Main or PiP. Just try reversing the selection.
Pressing the OSD button on the remote will toggle the display on and off. The default on
power up is on.
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