Your LCD TV when used as a computer display through DVI and/or VGA connection
provides a self-test feature that allows you to check whether your LCD TV is
functioning properly. If your LCD TV and computer are properly connected but
the LCD TV screen remains dark, run the LCD TV self-test by performing the following
steps:
A warning message may appear on the screen indicating LCD TV current status.
The following table contains general information about common LCD TV problems you might encounter.
COMMON SYMPTOMS |
WHAT YOU EXPERIENCE
|
POSSIBLE SOLUTIONS |
| No Video/ Power LED off |
No picture, LCD TV is dead |
- Check connection integrity at both ends of the
video cable
- Electric outlet verification
- Ensure power button depressed fully
|
| No Video/ Power LED on |
No picture or no brightness |
- Increase brightness & contrast controls
- Perform LCD TV self-test feature check
- Check for bent or broken pins
|
| Poor Focus |
Picture is fuzzy, blurry or ghosting |
- Push Auto adjust button
- Adjust Phase and Clock controls via OSD
- Eliminate video extension cables
- Perform LCD TV reset
- Lower video resolution or increase font size
|
| Shaky/Jittery Video |
Wavy picture or fine movement |
- Push Auto Adjust button
- Adjust Phase and Clock controls via OSD
- Perform LCD TV reset
- Check environmental factors
- Relocate and test in other room
|
| Missing Pixels |
LCD screen has spots |
- Cycle power on-off
- These are pixels that are permanently off and is a natural defect that occurs in LCD technology
|
| Stuck-on Pixels |
LCD screen has bright spots |
- Cycle power on-off
- These are pixels that are permanently on and is a natural defect that occurs in LCD technology
|
| Brightness Problems |
Picture too dim or too bright |
- Perform LCD TV reset
- Push Auto Adjust button
- Adjust brightness & contrast controls
|
| Geometric Distortion |
Screen not centered correctly |
- Perform LCD TV reset on "Position Settings Only"
- Push auto-adjust button
- Adjust the centering controls
- Ensure LCD TV is in proper video mode
 |
Note: When operating in DVI mode, the positioning adjustments are not available. |
|
| Horizontal/Vertical Lines |
Screen has one or more lines |
- Perform LCD TV reset
- Push Auto Adjust button
- Adjust Phase and Clock controls via OSD
- Perform LCD TV self-test feature check and determine if these lines are also in self-test mode
- Check for bent or broken pins
|
|
Note: When operating in DVI mode, the Pixel Clock and Phase adjustments are not available. |
|
| Sync Problems |
Screen is scrambled or appears torn |
- Perform LCD TV reset
- Push Auto Adjust button
- Adjust Phase and Clock controls via OSD
- Perform LCD TV self-test feature check to determine if scrambled screen appears in self-test mode
- Check for bent or broken pins
- Boot up in the "safe mode"
|
| LCD Scratched |
Screen has scratches or smudges |
- Turn LCD TV off and clean the screen
|
| Safety Related Issues |
Visible signs of smoke or sparks |
- Do not perform any troubleshooting steps
- LCD TV needs to be replaced
|
| Intermittent Problems |
LCD TV malfunctions on & off |
- Ensure LCD TV is in proper video mode
- Ensure video cable connection to computer and to the flat panel is secure
- Perform LCD TV reset
- Perform LCD TV self-test feature check to determine if the intermittent problem occurs in self-test mode
|
| COMMON SYMPTOMS |
WHAT YOU EXPERIENCE |
POSSIBLE SOLUTIONS |
|
Poor TV signal reception
|
Abnormal picture seen from the screen |
- The proximity of mountains or high buildings
may be responsible for ghost pictures, echoing or shadows. In this case,
try manually adjusting your pictures: see 'fine tuning' or adjust the
direction of the outside aerial.
For Asia users in non-NTSC area: Does your antenna enable you to receive
broadcasts in this frequency range (UHF or VHF band)? In the event of
difficult reception (snowy pictures) switch the NR on the PICTURE menu
to ON.
|
| No TV picture |
No picture when TV input was selected |
- Have you connected the aerial socket properly? Have
you chosen the right system? Poorly connected SCART cables or aerial
sockets are often the cause of picture or sound problems (sometimes
the connectors can become half disconnected if the LCD TV set is moved
or turned). Check all connections.
|
| No sound |
No sound output when a program with sound was playing |
- Ensure that the audio cables are firmly connected to
both the audio input connectors on your LCD TV and audio output connectors
on your PC or Video player.
- If on certain TV channels you receive a picture but
no sound, this means that you do not have the correct TV system. Modify
the SYSTEM setting.
|
