The monitor turns off and on repeatedly.

There are lots of reasons why it can shutdown, but happerlly none should be serious. It may be that the B+ or Power supply is too high, look for a pot near the power supply and try turning it down a bit. Also the x-ray protection may be too high, look for the X-Ray pot, found near the FBT, turn that down too. I assume your a tech and know how and where to be carefull.

It sounds like your video card settings are too high and your monitor cannot handle the settings. One way to confirm this is to boot into SAFE MODE and see if it still happpens. If it does not, then its the video card settings. If it does, then it indicates that the monitor is in need of service or replacement.Turn down the resolution and color depth settings all the way, and then increase them incrementally until it is as high as it can go until this problem starts happening again. To adjust video settings, right click anywhere on the desktop and select Properties. Then go to the settings page.If the display does not stay active long enough to make these changes, then boot into SAFE MODE and delete the video adapter from the device manager. Upon rebooting the computer, the video adapter will re-install itself with low default settings.Is the correct monitor selected in your display settings?Make sure that the correct monitor appears in Display properties. If the wrong monitor is selected, Windows might not use the full capabilities of your monitor, and you might be restricted in your choice of screen resolutions.To check your monitor selectionOpen Display Properties in Control Panel. Click the Settings tab, click Advanced, and then click the Monitor tab. The monitor that is selected for your computer is displayed under Monitor Type.If correct monitor isn't listed, click Properties. Click the Driver tab, and then click Update driver. After the Hardware Update Wizard starts, click Install from a list or specific location, and then click Next. Click Don't search. I will choose the driver to install, and then click Next. This provides a list of monitor manufacturers and models.In Manufacturers, click the manufacturer of your monitor, and then in Models, click the model name.
If your monitor isn't listed, click (Standard monitor type) in Manufacturers, and then choose the most compatible setting for your monitor in Models. Click Next, and then click Next again. NoteTo open Display Properties, click Start, click Control Panel, click Appearance and Themes, and then click Display.Are you using the wrong driver for your display adapter? ImportantThe following procedure might require you to restart your computer, which will close this troubleshooter. If possible, view this troubleshooter on another computer while you perform the steps on the computer you are troubleshooting.To continue troubleshooting if no other computer is availableRight-click the page displayed on your screen, and then click Print.

1. Follow the steps in the printed copy of the procedure.
   
2. After your computer restarts, reopen this troubleshooter and answer each question as you answered it initially.When you reach this page again, answer the question at the bottom, and then click Next.If the wrong driver is specified for your display adapter (video card), you might have problems installing your monitor or increasing the video resolution above 640 × 480 with 16 colors.To find out whether a better driver is availableOpen Display Properties in Control Panel. Click the Settings tab, click Advanced, and then click the Adapter tab. Click Properties, click the Driver tab, and then click Update Driver.Click Install the software automatically (Recommended). Follow the instructions in the Hardware Update Wizard to search for a better display adapter driver. Restart your computer if you are prompted to do so. NoteTo open Display Properties, click Start, click Control Panel, click Appearance and Themes, and then click Display.You might be able to download an updated driver from Windows Update. To go to the Window Update Web site, click Start, point to All Programs, and then click Windows Update. If an updated driver is available, follow the instructions for downloading the software to your computer and installing it. If the driver is not installed automatically, use the procedure above to locate and install the driver on your computer.
   

• To continue troubleshooting if no other computer is available
  
  1. Right-click the page displayed on your screen, and then click Print.
     
  2. Follow the steps in the printed copy of the procedure.
     
  3. After your computer restarts, reopen this troubleshooter and answer each question as you answered it initially.When you reach this page again, answer the question at the bottom, and then click Next.To decrease hardware accelerationOpen Display Properties in Control Panel. Click the Settings tab, click Advanced, and then click the Troubleshooting tab. Drag the Hardware acceleration slider to the left.
     

1. Click OK, and then click OK again.
   
2. Restart the computer when you are prompted to do so.
   

• To open Display Properties, click Start, click Control Panel, click Appearance and Themes, and then click Display.
  

It sounds like your video card settings are too high and your monitor cannot handle the settings. One way to confirm this is to boot into SAFE MODE and see if it still happpens. If it does not, then its the video card settings. If it does, then it indicates that the monitor is in need of service or replacement. Turn down the resolution and color depth settings all the way, and then increase them incrementally until it is as high as it can go until this problem starts happening again. To adjust video settings, right click anywhere on the desktop and select Properties. Then go to the settings page. If the display does not stay active long enough to make these changes, then boot into SAFE MODE and delete the video adapter from the device manager. Upon rebooting the computer, the video adapter will re-install itself with low default settings.

My monitor probleum it will want to switch it fail all time it repartedly if it want to switch but it fail

My client have the same issue. The screens (duplicate) will randomly go blank and come back a second later.
1. I have replaced the screens with brand new Dell 23" LED (S2330MX) ones (hardware replacement cycle). The old 4:3 Dell LCD 20" screens did the same.
2. These screens are capable of running full HD resolution, but it has been lowered to the client's comfort level.

Could it be the PC or the graphics card. That hasn't changed.

Any random behaviour with a monitor, such as turning it's self off and on, or showing messages like "menu controls locked" and then a few seconds later, "menu controls unlocked" are probably just dirty control buttons getting stuck partially down on the micro switches behind.

If you're out of warranty and are moderately handy. Turn off the PC, the Monitor and all power. Disconnect the video and AC power cables. Unscrew or click off any cover over the base screws at the back, then unscrew the base from the back of the monitor body. Undo any screws going through from the back that hold the screen surround.

CAREFULLY and patiently go around the join between the body and the front screen surround and gently lever the surround off with one or two thin blades. I used two putty knives because they are firm and not sharp. Ordinary kitchen knives are also wide enough not to damage the plastic as screwdrivers might.

You are likely to find the plastic control buttons along the edge of the surround, not moving freely, with a mixture of dust, dried contaminants from your fingers and splashes from drinks over time. Give it a good wash in fairly warm water with a little dish washing detergent until the buttons move freely, then rinse, dry and refit.

If the problem is deeper, then it's quite possible that it will cost more to have it professionally repaired than buying a new monitor.

Good luck,
Steve

Lol, this is kinda a grader solution... any deep answer? It's not the video card when you put the same blinking/flashing display monitor in other CPU case and still blinking...

U R so stupid! The problems R in capacitators in internal power suply of the monitor. Go to service!

There are lots of reasons why it can shutdown, but happerlly none should be serious. It may be that the B+ or Power supply is too high, look for a pot near the power supply and try turning it down a bit. Also the x-ray protection may be too high, look for the X-Ray pot, found near the FBT, turn that down too. I assume your a tech and know how and where to be carefull.

It sounds like your video card settings are too high and your monitor cannot handle the settings. One way to confirm this is to boot into SAFE MODE and see if it still happpens. If it does not, then its the video card settings. If it does, then it indicates that the monitor is in need of service or replacement.Turn down the resolution and color depth settings all the way, and then increase them incrementally until it is as high as it can go until this problem starts happening again. To adjust video settings, right click anywhere on the desktop and select Properties. Then go to the settings page.If the display does not stay active long enough to make these changes, then boot into SAFE MODE and delete the video adapter from the device manager. Upon rebooting the computer, the video adapter will re-install itself with low default settings.Is the correct monitor selected in your display settings?Make sure that the correct monitor appears in Display properties. If the wrong monitor is selected, Windows might not use the full capabilities of your monitor, and you might be restricted in your choice of screen resolutions.To check your monitor selectionOpen Display Properties in Control Panel. Click the Settings tab, click Advanced, and then click the Monitor tab. The monitor that is selected for your computer is displayed under Monitor Type.If correct monitor isn't listed, click Properties. Click the Driver tab, and then click Update driver. After the Hardware Update Wizard starts, click Install from a list or specific location, and then click Next. Click Don't search. I will choose the driver to install, and then click Next. This provides a list of monitor manufacturers and models.In Manufacturers, click the manufacturer of your monitor, and then in Models, click the model name.
If your monitor isn't listed, click (Standard monitor type) in Manufacturers, and then choose the most compatible setting for your monitor in Models. Click Next, and then click Next again. NoteTo open Display Properties, click Start, click Control Panel, click Appearance and Themes, and then click Display.Are you using the wrong driver for your display adapter? ImportantThe following procedure might require you to restart your computer, which will close this troubleshooter. If possible, view this troubleshooter on another computer while you perform the steps on the computer you are troubleshooting.To continue troubleshooting if no other computer is availableRight-click the page displayed on your screen, and then click Print.

1. Follow the steps in the printed copy of the procedure.
   
2. After your computer restarts, reopen this troubleshooter and answer each question as you answered it initially.When you reach this page again, answer the question at the bottom, and then click Next.If the wrong driver is specified for your display adapter (video card), you might have problems installing your monitor or increasing the video resolution above 640 × 480 with 16 colors.To find out whether a better driver is availableOpen Display Properties in Control Panel. Click the Settings tab, click Advanced, and then click the Adapter tab. Click Properties, click the Driver tab, and then click Update Driver.Click Install the software automatically (Recommended). Follow the instructions in the Hardware Update Wizard to search for a better display adapter driver. Restart your computer if you are prompted to do so. NoteTo open Display Properties, click Start, click Control Panel, click Appearance and Themes, and then click Display.You might be able to download an updated driver from Windows Update. To go to the Window Update Web site, click Start, point to All Programs, and then click Windows Update. If an updated driver is available, follow the instructions for downloading the software to your computer and installing it. If the driver is not installed automatically, use the procedure above to locate and install the driver on your computer.
   

• To continue troubleshooting if no other computer is available
  
  1. Right-click the page displayed on your screen, and then click Print.
     
  2. Follow the steps in the printed copy of the procedure.
     
  3. After your computer restarts, reopen this troubleshooter and answer each question as you answered it initially.When you reach this page again, answer the question at the bottom, and then click Next.To decrease hardware accelerationOpen Display Properties in Control Panel. Click the Settings tab, click Advanced, and then click the Troubleshooting tab. Drag the Hardware acceleration slider to the left.
     

1. Click OK, and then click OK again.
   
2. Restart the computer when you are prompted to do so.
   

• To open Display Properties, click Start, click Control Panel, click Appearance and Themes, and then click Display.
  

Power supply source

Check the connections between the monitor and the computer. As well as the connection for the power. Sometimes there can be a bad/poor power connection and it causes the power to go out at the slightest movement.

The lcd has three parts the screen plate(windows)/the logic(vga)/the inverter(power plug). You have 2 out of 3 working ok. The power save option via the vga(on/off, connected/dis) is rerunning the lcd self test and finding an error(the plate in this case). Parts that go are the backlight ccfl's, behind the plate, and parts of the inverter, ie capacitors, all three take a bit of power from the inverter. The self test check that all the lights are ok and the inverter is ok, else it switchs off, ie if 3/4 light work it will switch off(my own case), hence the on chech error then off, However sometime there are stages of on/off ie on/ but no perm screen display(only temp), if that is the case the following may be of help...if you put bright light at an angle close to lcd can you see a windows shadow, text icons etc, ie still logic power passing(vga),then .... (from a.n. other) after two weeks searching I finally find doctor living stone http://www.aplusperfect.com/articles/lcd_capacitor_repair more fun with paulbtorrent the takening the case bit off is like opening your wallet a second time after buying a new LCD, but you must! smallest two screw driver's flat headed, practice using two pennies stuck together()with your fingers after, one little () move and inch and {} again, with the case , it does not break, just need to lever open [once open you realize they somehow put that old briefcase clip inside!] also note the bright light test to do first to see if can see a windows
screen , and that capacitors are one for a number of things that a make a inverter work! there a transistors as well, given that however, to replace all the capacitors on my inverter, was 11 capacitors, cost me $11 (uk ebay) and already had the iron and solder. So only cost me me $11 to try and see but no luck , still fun and I still can see the screen for 2 sec' at a time plus I have a spare set of caps now in the event that the new one do go burst! you have to laugh really, what next , a new on/off button, as you work though the whole thing !
mmmMMMMmmmMMMMmmmMMMMTim Berners-leeMMMMMmmmmMMMMMmmmmcome back all is not
wellMMMMMMMMMMnnnnnnweek later land sight mmmmmMMMMMMMMMmmmmgggggggg(from
another a.n other)Generally, if the screen went out quickly, it was the inverter. If it went out over a slow period of time (flickering etc..) I would bet it is the lamp.replaceing the lamp should be pretty challenging. as that requires complete breakdown of your LCD, extraction of your dead lamp, and soldering in your new lamp... but I would like to say that I it did this after realizing it's 2 x kitchen strips inside [========] x 2 with wires that can connect back to the inverter with out any desoldering(ie kit assembly/dis) with the outter case remove (glass plate safe away) I could reconnect and see that 3/4 were working (i!i hardcard ) cause the inverter to switch off after a secound ! order ccfl and replace and going to cheap and see if I can get away with fitting a 15" in my 19' as it a 1/3 of the price ! the market as drop out there, hope the inverter does not miss the length, or the screen out put. http://www.lcdparts.net/howto/troubleshooting/LaptopCCFL1.aspx OR MONITOR, I when a head because I could get the inverter to keep the 4 going out of their shell, but in the strip, using a spare, but then I broke a wire joint and then broke a tube. But at least I found out a bit more about inverters and ccfl's ! After hong konging a part a 20.1 for $8, plus a 15, got it to work, the bottom of the screen looks like a cinema, dark at the sides, will have to order another 20" cclf at some point, but at least my HF207 is now working ok hence this note !paulbtorrent!