W2300
19
Troubleshooting
Common Problems
The following table contains general information about common LCD TV problems you might encounter.
COMMON SYMPTOMS
No Video/ Power LED off
No Video/ Power LED on
Poor Focus
Shaky/Jittery Video
Missing Pixels
Stuck-on Pixels
Brightness Problems
WHAT YOU EXPERIENCE
No picture, LCD TV is dead
No picture or no brightness
Picture is fuzzy, blurry or ghosting
Wavy picture or fine movement
LCD screen has spots
LCD screen has bright spots
Picture too dim or too bright
POSSIBLE SOLUTIONS
Check connection integrity at both ends of the video cable
Electric outlet verification
Ensure power button depressed fully
Increase brightness & contrast controls
Perform LCD TV self-test feature check
Check for bent or broken pins
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
Push Auto Adjust button
Adjust Phase and Clock controls via OSD
Perform LCD TV reset
Check environmental factors
Relocate and test in other room
Cycle power on-off
These are pixels that are permanently off and is a natural defect that
occurs in LCD technology
Cycle power on-off
These are pixels that are permanently on and is a natural defect that
occurs in LCD technology
Perform LCD TV reset
Push Auto Adjust button
Adjust brightness & contrast controls
Note: When operating in DVI mode, the contrast adjustment is not
available.
Geometric Distortion
Horizontal/Vertical Lines
Sync Problems
LCD Scratched
Safety Related Issues
Intermittent Problems
Screen not centered correctly
Screen has one or more lines
Screen is scrambled or appears torn
Screen has scratches or smudges
Visible signs of smoke or sparks
LCD TV malfunctions on & off
Perform LCD TV reset on "Position Settings Only"
Push auto-adjust button
Adjust the centering controls
Ensure LCD TV is in proper video mode
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
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-testMode
Check for bent or broken pins
Boot up in the "safe mode"
Turn LCD TV off and clean the screen
Do not perform any troubleshooting steps
LCD TV needs to be replaced
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
Note: When operating in DVI mode, the positioning adjustments are
not available.
Note: When operating in DVI mode, the Pixel Clock and Phase
adjustments are not available.
Summary of Contents for Dell W2300
Page 24: ...Wiring Diagram 24 W2300 Go to cover page ...
Page 64: ...Scaler PCB C B A 1 64 W2300 9 Go to cover page ...
Page 65: ...Scaler PCB C B A 2 65 9 Go to cover page W2300 ...
Page 66: ...Audio PCB C B A 66 W2300 9 Go to cover page ...
Page 67: ...TV Box PCB C B A 67 9 Go to cover page W2300 ...
Page 68: ...Power Circuit Diagram 68 W2300 9 Go to cover page ...