Question about NEC Diamond Pro 930SB 19" CRT Monitor

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Mitsubishi diamondpro 930sb flickering

Recently, my monitor has been 'flickering', meaning that there are 'lines' that run up and down the screen, and sometimes more severe white and black lines that look like static, or something. And once in a while, the entire screen diminishes to a 1mm tall bright white line that goes across the screen. Is this a serious, horrible problem with my monitor, or can I get it fixed? I love this thing to death, but I fear it may be on its last legs. Thanks, Andrew

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Re: mitsubishi diamondpro 930sb flickering

I have had the same problem with my 991sb and most recently my 930sb. The first was replaced at NEC's expense however on this second one i'm out of luck. I think its a problem with its power inverter. It may be repairable by a tv repair place. I'll be looking into it and let you guys know.

Posted on Nov 21, 2007

Re: mitsubishi diamondpro 930sb flickering

I have the same exact problem. I was thinking it was some distortion from a source i cant detect. Changed the cords switched the Vcard inputs to DVI whatever i did its the same. I got a 17" NEC Multisync Fe700+ standing right besides the 930Pro, It works absolutely fine although i got it from hte basement from junk... pretty sad about this bought it 3yrs ago paid quite a bit... had big hopes for NEc and Sony tube..:(

Posted on Sep 16, 2007

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Re: mitsubishi diamondpro 930sb flickering

Well if your rich ,junk it and get a new one,sounds like internal problems on board or cord problems broken wires in cord loose pins in pinout plug ,i say replace isnt worth the hassle for repair

Posted on Sep 07, 2007

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Monitor flickers with lines across screen

screen is going bad which is why its flickering and has the lines across the screen. Theres a board behind the lcd and when that doesn't process the voltage properly it can cause the screen to flicker. White lines across the screen means the screen is going bad. At this point unless your monitor is under warranty, go ahead and replace it.

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Monitor flickers, similar to a fluorescent light bulb that is going out. Also, there is one line on the left side of the screen, going up and down, that changes color, but it comes and goes. I thought...

The problem is in the monitor screen, there is a large circuit board connected behind the main display screen. The video signal is feed to the main board and generates the proper color balance, the second problem is the lamp behind the display is flickering and breaking down. To repair this will not be cost effective, cheaper to replace the monitor. But I would suggest hooking a spare monitor to the computer to make sure there are no additional issues.

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Vertical lines accross the screen

Vertical lines running down the screen is indicative of a data failure to the screen itself, which means either the screen is starting to fail or the data being transmitted through the data cable is being interferred with. Put a hand on either side of the monitor and give the monitor a light twist....does the line disappear? or do more lines either case, there is a problem where the data cable attaches to the lcd panel itself. You can try to change out cables, if that doesn't correct it, then the panel may have to be replaced. If you have the option of trying the computer on another monitor that would be the first step in seeing where the problem lies.

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My Acer AL1716W monitor flickers, but only when I'm on the internet.

flickering monitors normally mean the lamp is on its way out but this sounds like your PC has issues either with the graphics card or memory. Run a virus check and antispyware software. If you don't have this software try microsoft security essentials its free. and people tell me its good.
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Mitsubishi NEC Diamond PRO 930SB Monitor - cover removal?

Remove the screws as you have done. Looking at the monitor front on you'll see 3 bits sticking down from the top (in the deatil gap) which are clips unclip them by pushing through the corresponding holes along the top. Also there's a clip at each side on the underside of the monitor which are very obvious. With the monitor facing down and everything unclipped just pull the cover upwards. It's not easy but work your way round the front edge and it will come.

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I have noticed recently that the screen words flicker.

If the monitor is less than a year only, then your best bet is contact the manufacturer for warranty support.

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Flickers and Lines

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1 Answer

Monitor flickring

  1. Flickering screen display

    Flickering on the screen can be caused by defective hardware in the computer or by improperly installed software, but it can also be caused by interference from external devices. The following examples describe situations in which your screen could start flickering:
    • Screen starts flickering because of interference caused by devices which generate magnetic fields, for instance:
      • a TV set
      • a laser printer
      • another monitor
      • fluorescent lights
      • hidden power lines
    • Apart from interference, an incorrect setting in your system CMOS setup can also cause flickering. On some systems it is possible to distinguish between interlaced and non-interlaced monitors. The setup of your system should always be colour non-interlaced.
    • Proximity to the monitor of fans, air-conditioning units or other devices with rotating motors.
    • The number of devices using power from the same electrical line. Are you overloading the plug?
    • Monitor placed on an unstable surface.
    • Improper video drivers, this is a software problem, see section B
    • An improperly configured or a defective video card.

  2. Reinstalling the video drivers

    1. Start the computer.
    2. Click Start, select Settings, and click Control Panel.
    3. Double-click the System icon.
    4. Select the Device Manager tab in the System Properties window.
    5. Make sure that View devices by type is selected and locate Display adapters and Monitor in the list.
    6. Click the plus sign (+) in front of both items to get a list of installed devices.
    7. You need to remove every device by highlighting it and clicking the Remove button and OK when the warning message appears.
    8. After doing so for both items, they should disappear from the list.
    9. Close the Device Manager by clicking OK, and you will return to the Control Panel.
    10. Double-click the Add New Hardware icon.
    11. Click Next, select Yes when it asks "Do you want Windows to search for your new hardware?", and click Next twice to start searching for new hardware.
    12. This will take a few minutes and, after it is finished, you will have to restart the computer. Windows 95 or higher will automatically set up the correct monitor and video drivers.
    13. If the screen is still flickering, click Start, select Settings, and click Control Panel.
    14. Double-click the Display icon and select the Refresh tab.
    15. Change the Monitor Refresh Rates until the flickering disappears.
    16. If the flickering remains, go to step C.

  3. Troubleshooting

    1. If it is possible, connect a different monitor to the computer. If the flickering disappears, it is a fair indication that the monitor is defective, otherwise go to the next step.
    2. Set up the computer and the monitor on a different place in your house. If the flickering disappears now, it is most likely an interference caused by something in the original location. Check for devices which can cause interference.
    3. If the flickering persists, check the setup of your system. If available in the setup, make sure that the option Monitor Type is configured as Colour Non-Interlaced.

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1 Answer

Monitor flickers

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Secondly try the degauss button on the front panel of the monitor…
Third thing is CRT’s power supply section capacitor is leakage so you need to change…
(If you know how to remove the parts from the CRT other wise go to the CRT repairer.)

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Ocassional flickering

Not sure what the problem is, but am experiencing the same symptoms every few minutes on a Mitsu Diamond Pro 91TXM, just retrieved from storage after 7 years. How's your screen holding up since April?

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