Question about Dell D1028L 17" CRT Monitor
I have Dell 17" Monitor, Model:D1028L with Chassis No. CM6800. The monitor doesn't turn on (power LED and screen remain black) when power is turned on but when the power cord is plugged out the power LED turns on for few seconds and then goes out. I've technical knowledge about electronic equipments so please help me with this problem even if the solution is technical. Regards, Zahid
Your inverter power supply has gone bad. You will need to replace the whole board or replace the the 2sc5707 transistors in the inverter area. Check out this link for installation videos and how to for that model
They also sell the whole board as well as repair kits
Posted on Jun 21, 2008
SOURCE: Dell Monitor Not Working
well if the status of the LEd on the monitor is amber(orange) & the system is running on a on board video card & not a Add-on video card... it is a possibility the the integrated video card ot the mother board might have gone bad... either contact a local tech or the tech support for the computer...
also unplug the monitor cable from the system tower & then if you see that there are the bars moving which say monitor self test on... means tht the problem is with the video card or the mother board...
since the system is running on a integrated video card...
Posted on Jan 18, 2009
First, verify the monitor is functional.
Monitor STFC (Self Test Feature Check)
Turn off the monitor
Plug the monitor power cord directly into the wall socket to remove any surge protectors or APCs from the troubleshooting equation
Unplug the monitor video cable from the back of the computer
Turn on the monitor
The floating dialog box should appear on screen against a black background.
If the issue appears during the STFC, the monitor is defective. What are the results please?
Posted on Feb 24, 2009
We have a dis-assebly and repair guide posted on our web site at:
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.
Posted on Jul 30, 2009
What do you mean your screen goes black. It is black to start isn't it? Does it come on at all?
If you meam you are getting a display, but it goes off, you need to check the power settings for your monitor, that are set by your PC. Click start, then control panel, then double click display. Then in the Dispay Properties window, click the Screensaver tab at the top middle.In the lower half of the page which opens, you can find power settings, and the rest is self explanatory. If this is not the answer to your problem, you need to give more detailed information.
One check you can do is to disconnect the signal cable from your monitor, and switch power on, and see what is displayed. You may well need a new monitor, but before running off to buy one, try to borrow one to connect to your pc, and also if possible, try to connect your monitor to another pc, or to a notebook/laptop.
Posted on Jun 18, 2010
The solution I am about to describe refers to a backlight problem, which is most common in Dell 15,17 & 19" monitors. The symptoms are as you describe:
Inside the monitor there is an inverter board that acts as a power supply for the monitor and the logic necessary to control the backlights (illumination and brightness control). There are four lighting tubes, which are controlled by two lighting circuits (two lighting tubes per circuit). At the heart of the inverter board is a chip that monitors feedback from the two lighting circuits and closes the back-light circuit down if either of the lighting circuits fail, thus any component failure will exhibit the same symptoms.
The transistors which fail most often cost pence to replace (types C5706 or C5707). However, their failure in unlikely to be the cause of the problem. My first crack at fixing this fault, by replacing the transistors, resulted in them failing again within 24/48Hrs. The cause of the problem will be dry solder joints or loose connections on the high-voltage side of the circuit, usually on the backlight transformer in the effected circuit. If you re solder each of the connectors on the transformer you will save the transistors from blowing again - the transformer generates 1,400Volts for the lighting tubes and at this voltage, arcing across the a dry solder joint, will quickly destroy the transistors again.
No soldering iron? - A complete inverter board replacement is also reasonably cheap and easy repair. These are widely available.
Sorry of this is more detail than you expected but it may help others reading this article.
Posted on Nov 28, 2010
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