Monitor powers up long enough for computer to boot, then the screen goes black. Sometimes the screen flickers slightly before this happens. When I lose the video I will see faint colored vertical lines that dissolve into black. The power light remains lit. If I turn off the monitor and power up again I will have video for a few minutes more. Any thoughts on what the problem is? Thanks.
The monitors inverter seems to be failing. If you look up close, can you see a very faint image of the desktop?
You should think about getting a new monitor it might be cheaper than repairing.
SOURCE: Dell SP2208WFP Flat Panel Monitor flickers out and goes black.
Hi again,
Any luck with the Dell people?
A favor if I may, at your convenience, would appreciate if you can rate our Live Session as you see it fit.
Pls post back how things turned up or should you need additional information.
Good luck and kind regards. Thank you for using FixYa.
SOURCE: LCD monitor turns off after 2 seconds from boot
Thanks for the suggestion, I have finally found out that the back light for the monitor is culprit. Also dell people and confirmed it . They aggred for a replacement. Thanks for the suggestion again.
SOURCE: Screen goes blank
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Cause of power going
off: There is a bad 1000uF, 16V cap
on the power supply board.
Solution: Replace cap. Radio Shack sells a 1000uF, 35V
cap for $2. This will work.
Why did the cap go
bad? The cap is too close to a heat
sink and over heated.
What does this cap
do? This cap sends a signal to an IC
which keeps the monitor 'on' after the power switch is pushed. When the cap is weak, AC ripple voltage is
applied to the IC and it sends a signal to shut the monitor off.
Opening the Monitor:
These monitors are difficult to open.
The two plastic pieces snap together and must be pried apart
with a flat screw driver.
After removing the stand, you need to insert a flat screw
driver at the bottom of the screen where two slots are located. Then work the screw
driver around until the two plastic pieces are separated.
Remove the cover plate and unscrew the push button circuit
board.
Unplug the monitor cords from the driver board and remove
the screen.
Unscrew the mounting screws from the power supply board and
remove.
You will need to pinch the plastic support in the middle of
the board to remove.
Cap Replacement:
Cap is located near a copper heat sink and the value will be
on the side of the cap. It will be bulged up on the top. You will see burn
marks on the board surrounding the cap. Unsolder the cap.
Install the new cap and solder. Make sure you connect + of
the cap to + marked on the board.
Be careful not to solder across joints.
Keep leads long so you can bend the cap as far away from the
heat sink as possible.
Reassemble monitor and turn on.
This should solve the problem.
SOURCE: blank screen, flashing green light
Internal power supply is hurting. It is a non linear supply and they switcher transisters are not working
SOURCE: Dell E172FPb monitor black screen green flashing power button
Hello,
We have a dis-assebly and repair guide posted on our web site at:
www.ccl-la.com/monitor_repair.htm
The problem is usually the driver transistors, our guide shows where they are and what to replace to get your monitor back running again.
I hope this helps, If so please rate my solution.
Buddy
Corporate Computer
www.ccl-la.com
Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Replacement board: http://www.lcdrepair.us
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