Question about Dell UltraSharp 1504FP Monitor
I have two Dell 1504FP Monitors. They both have the same symptom a blinking yellow power button. The light comes on whether or not it is plugged into a computer. It also comes on immediately after plugging in power - hitting the button results in no change.
Thanks for any insight in advanced.
SOURCE: my monitor turns yellow
Computer monitors get separate red, green and blue video signals from the computer, and if you lose the blue the result is a yellow picture. This can be caused by video card failure in the computer (very unlikely), a bad cable (fairly common), or trouble in the monitor (which is most likely what you have).
The usual problem with monitors is bad solder connections to the red, green and blue output devices. These are usually three separate transistors, but sometimes an integrated circuit that puts all three in one package is used. These outputs get pretty hot, and the heat can cause the connections on the circuit board to crack. Resoldering them usually fixes the trouble. (Sometimes the part actually fails, but bad connections are more common.)
The parts are normally in one of two places. Most commonly they are on the small circuit board you'll find right at the neck of the picture tube. Some monitors have them on the main circuit board. They may be mounted to metal heat sinks to help keep them cool. If you can identify them and resolder the connections, you'll probably get your normal picture back.
Posted on Nov 19, 2008
SOURCE: Dell Blinking Power Light
Just wanted to say Thank You for the info on this site. I had the same problem as previously posted. When powered up, the monitor showed a fast flash of the desktop and then went black, with the power indicator flashing green. I read the posts, purchased the capacitors and the 4 - 2sc5707 transistors through ebay. I ordered them on the 6th and rec'd them today. I only had one bad capacitor and one transistor that checked bad, but I ordered 5 caps and 4 transistors. When ordering the caps be careful of the height of the caps. I found this to be a problem because I ordered the 50v, 105 degree Panasonic caps that didn't fit with the enclosure attached, so I used the 4 good caps removed previously and replaced the bad one with a 470uf, 50v. 85 degree cap from Rubycon I found among my spare parts. Installed the parts and the monitor is working properly (for the last two hours) so I'm happy for as long as the repair lasts. Thanks again for the info.
Posted on Jan 09, 2009
SOURCE: Dell Blinking Power Light
I have worked on several of the Dell 17" and that is almost always the Capacitor problem.
The caps have died inside, and they can be replaced. If you have basic electronics skills, you can go in, order replacement caps, and unsolder and resolder. If you can't do it yourself, you can take it into a shop.
If you can get inside the frame of the monitor, and disassemble, you can find the caps by seeing a bulge on top, or even a rusty looking material on the top. Be VERY careful around the high voltage section if you do go inside.
Here is a link to the Cap plague that explains what happens in detail. But I repair these all the time with that symptom.
Posted on Apr 04, 2009
In this case your monitor is working fine. Your system is going to power saving mode. To resolve that remove your RAM and insert it. It will fix your issue.
Posted on Jun 16, 2010
More than likely there is a capacitor inside that back that has swelled and spilled its juice out.
A blinking orange light and than no power means that it is a voltage problem. These are not hard to open up and find the problem. You would be surprised at how little stuff is actually inside one of these.
Posted on Jul 02, 2011
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A solid green light means the computer is operating normally.
A solid yellow light indicates the power supply is operating normally but the computer is not processing data.
This could mean there is a problem with the CPu or another component on the motherboard.
((A blinking yellow light indicates the power supply is receiving power from the wall, but not functioning properly.
This generally means the power supply itself is bad and should be tested or replaced.))
A blinking green light means the computer is in standby mode.
You should consider visiting Dell Support and downloading the manual for your
your Dell computer. So use the LED power light codes if your Dell computer has them.
hope this helps
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