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Re: I have a dell lcd tv/monitor that just stopped...
Power supply module will be the first place to look at, from what you describe, at least the 5v standby power supply is still working, It can be the power supply module is bad or it is not getting the control signal from the main board to turn on the main power supply on.
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Hi,
If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.
https://www.youtube.com/watch?v=TR2iWN6b-LY
If it is on the dell workstation you may need to replace the Power Supply Unit (PSU). A strong indicator of this is when you go to turn on the machine the power light continuously flashes an amber color, which may appear to be orange.
Pleasec look through my albums so you will know what to look for.
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also. http://en.wikipedia.org/wiki/Capacitor_plague http://www.badcaps.net
it could be th epower supply and it could be the monitor.
power ON button should not flash orange regardless what you do. it should stay green. then orange. not orange to green to orange.
try the monitor on another PC if you can fine one.
the other thing is are the 2 monitor similar (CRT to CRT and LCD to LCD), you can't mix the the two, they will work but need different video driver to function correctly.
Unless you recently installed new video or monitor drivers, it sounds like either bad cabling to your computer (check the cables?) or the ribbon cable inside the LCD monitor has come unseated.
The unseated ribbon cable problem is more common if you recently moved the monitor or dropped it a bit. You can open the back of the LCD monitor (unplug it first of course) and check to make sure the signal ribbon is seated properly, this is a common problem.
It totally sounds like the backlight is toasted. If that is the case you will have to replace them. Normally if the power inverter is shot, the monitor will power up briefly at least and then shut off. If you can use a flash light and see some sort of image on the screen you know that your VGA chipset works however your backlight(s) are burnt out. If not, more than likely your power supply (power inverter chipset) is broken and needs to be replaced..
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