I have a 910MP that appears to have a blank screen. I say appears, because that is what I thought until I observed it in a brightly lit room and on an angle.
There is video (you can barely see it). What has happened is the backlighting has failed.
I have been able to source a replacement power supply (on the internet)
but am not sure if it is truely the supply or the actual lights themselves.
Is there a way to test this ?
The supply is $200.00 and I could probably by a replacement monitor instead. I don't want to throw good money after bad.
My 910MP recently developed the bad habit of resetting the Contrast/Brightness/Color/Sharpness settings to 0/0/0/0 all by itself. This results in a "black screen" as well. The cure is to go into the menu and raise the settings again.
Replace the Capacitors in the power supply. Start by replacing the two 1000 uF and two to four of the 470uF. Make sure you replace them with computer grade replacements i.e 105c temp rating and it doesn't hurt to up the voltage either. This will usually do the trick. If not, you may have a burned out CCFL or one or more of the driver chips that drive the transformers is toast. Lastly there is always the possibilty of a shorted transformer. Good Luck!
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guest, If you do not have any time to explore (investigate, read) then trade your old unit for new!! If that not option you wish to take , then read fixya monitor profiles of "louie12fix" , "budmrtn", "buddymc" and other tech's that specialize in repair of "cold-cathode-fluorescent-lamp back-lit lcd monitors. Follow all "links" you find in the profiles and view some video clips on YOUTUBE that deal with "lcd monitor disassembly" and "lcd monitor repair" to learn just WHY your unit acts the way it does. Why don't you try the "flashlight-test" that EVERY owner of an lcd monitor should know when a BLACK or BLANK screen shows up when it shouldn't be there in the first place. My best guess is that your monitor's problem is internal to unit and not a software problem. 12fixlouie Bye for now
Open the monitor, examine the circuit boards. Look for small components that look like small cans, these are capacitors. If you see any that look bulged on top, then your problem can probably be solved by replacing these. Check out the following sites;
it sounds like the inverter was defective, the monitor will be fine for few seconds then go off but power light still stay on with Green. You can contact with manufacturer for repair service if it still under warranty.
ritchaddison, Problem could be inside monitor. If "cold-cathode-fluoresscent-lamps" fail to stay lit. problem might be the "electronic ballast" circuit needs work done on it. Also check the "switch-mode-power-supply" for typical failure modes that result in "black screen" complaints. Remember this!! Your monitor no different than any other brand of CCFL back-lit LCD display in it's basic design and operation. Software not problem. Only you or qualified electronics technician will repair this unit. Read my and other LCD monitor tech's fixya profiles to make decision on what option you will use on 910mp unit. 12fixlouie
Check you video card first, if you can remove it, then have it clean, the contact with an pencil eraser, just make it sure wipe the eraser residue, then put it back again, also check the built in fan on your video card, make it sure it is running
dpelrod727, Yes, the "switch-mode-power-supply" is in "partial" or "full" SHUTDOWN mode. Reconnect E172FP to a fully booted KNOWN good PC with the win-desktop as the displayed screen. Check with flashlight to see if your LCD panel is both BLACK and BLANK, or just BLACK by holding a bright flashlight 1" from screen at different angles even though the screen appears to be blank. If very faint image of desktop is seen then your SMPS is still half alive. Here are your options in either case. 1. Trade in for new. 2. Try Dell for a cash+old swapout for a Refurbed unit. 3. Check out www.ccl-la.com/badcaps, www.badcaps.net, www.lcdparts.net, and YOUTUBE long video clips dealing with LCD monitor disassembly and LCD repair. could be helpful in making decision on what to do. I'm 12fixlouie If this was helpful rate on fixya.
This looks like a problem with the video card or the power supply to the monitor. Try connecting a different monitor and if you still face the same problem then probably you may need to have a look at your video card or its connection in motherboard
Look for bulged or leaking capacitors on the power supply board. If you can solder, you should be able to replace them with the same type and rating and that may just solve the problem. I've had luck with a couple of dozen monitors so far.
Unplug the monitor from the computer, it should display the diagnostic screen on monitor in color. if not reconnect it and boot computer or attach to a running computer with some stuff on the screen, get a bright light and shine on the screen at an angle do you see the stuff/desktop.if you do the lamp or power supply is bad. if the monitor is lit and the lamps work but no diagnostics then the video cpu on the monitor is bad. post your findings here