Samsung Syncmaster 940BW LCD Monitor - Answered Questions & Fixed issues

This is a repeat question. Terry

Check the graphics card. Terry

Hi,

This usually means that one or more of the bulbs inside your monitor have gone

as far as i can tell this monitor is not HDCP compliant ( High Def Copy Protection ) and therefore will not be suitable as a TV monitor. Computers can use non HDCP compliant monitors but TV Tuners, Satellite Receivers, DVD players etc with HDMI are HDCP compliant and must have a HDCP display... HDMI has two formats basically HDCP and non HDCP

Hi there,You can try to disconnect VGA cable to see will the notification "no VGA signal" appear on screen. If so the problem could be with PC graphics, else it is power board problem bad caps.Thanks

This may not be the monitor that is causing the problem, try your system with a different monitor. I think the problem may be with your computer. Check your RAM-remove the sticks one at a time.

Check the capacitors on the power supply board. The tops should be flat, no bulging or puffing up at all. The fading to white usually indicates a failure of one or more capacitors on the board. Here is a link to a repair kit if you find blown capacitors on the board.http://www.ccl-la.com/catalog/product_info.php?products_id=241

Replace all of the capacitors

Hi,

I can think of a few possible reasons
First,did you check all the card connections? A lost PCI connection could easily cause such unstable behaviour and check ram,
remove 1 of the ram memory cards,  after that you check its working or not.

Hope this helps.

Thanks,

virus problem formatting ur CPU or if ur display not see u 1st then unplug vga cable ,what u see reply

That is a typical symptom of a failed power supply board. Here is a post that shows how to open the monitor and what to look for and replace to repair the unit.http://www.ccl-la.com/blog/index.php/repairing-the-samsung-940mw-lcd-tv/I hope this helps.BuddyMc

Canbe due to a faulty LCD , a problem in the main board . Now to confirm this you need to check your PC with another monitor . if so the monitor is faulty and a check on the backlight setting will confirm if there is low drive from the invertor board.

there is someting wrong with the lcd

This is a common problem with monitors when changing resolution. What probably happened is you may have tried to change the resolution, or an application changed the resolution, to an incompatible resolution.

For example, if you have a tiny little screen it can't display that huge resolution that a 32 inch monitor has. So, your monitor is stuck in that wrong resolution.

To fix this problem, you need to boot into Safe Mode. Restart your computer, and as it is booting up tap F8 a bunch of times, and then select Boot into Safe Mode.

When it boots up, right click on the desktop, click Properties (Windows XP) or Screen Resolution (Windows 7). When the window pops up, click Settings (if on Windows XP, if on Windows 7 skip to next step). From this window, change the resolution back to the basic 800 x 600 screen resolution.

Now, reboot your computer normally. You should be able to see the desktop. Now, you can do the same thing that you did in safe mode and turn up your resolution. BUT, when you change it, if the screen goes BLANK again, DO NOT press anything. After 15 seconds it should go back, and you can try a lower resolution.

Hope this helps! Thanks for using FixYa.

You don't connect speakers to the monitor, you connect it to the tower of the computer. If I'm not understanding your question right then please be more specific. If your monitor has speakers, you connect the audio cord to the tower then to the monitor or vise versa.

Hi,

This is an indication of out-of-regulation in the power supply section. This was caused by leaky/dried electrolytic capacitor in that section. It will dropped the supply from normal voltage and will disable the unit.It needs a little warm-up to make itself stable but the symptom will get worst until the unit will not even power up. Sometimes it has a bulged/dome at the top but not all, it is better that you have acapacitor checker/tester to determine its condition. Your unit will back to normal again if the leaky/dried capacitor is isolated.

If you don't have necessary tools and test instruments, and can't do the job yourself, I would advice you to look for a professional to troubleshoot the problem. Don't attempt to work in the power supply if you don't know the safety precaution of handling it, there some stored electricity enough to hurt you with a little mistake only.

Also check if your unit is under warranty /extended warranty, avail it because the manufacturer of your unit will fix it for free. Don't open the back panel, this will void the warranty.

Let me know if you need further assistance.

Hope I helped you.

Have a nice day!

Thanks for using Fixya.

you might have a problem with the LCD"s firmware you should go to a service and have it updated its cheaper than buyng a new monitor

First thing I would try will beusing this monitor with another PC using the same the same setup to see if it works OK. We need to narrow down the cause of the problem first since you have three parts that can be bad; Monitor, DVI cable, PC Video card/PC. It is just a process of elimination to locate the problem.

Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Hello
damnor01 here to the rescue!

Welcome to Fixya.

Since you pushed the Auto button it is possible that the monitor has changed the input type to a type other than that you are currently using.

For instance it may have chosen to accept VGA input however you have the DVI or HDMI connected.
To fix this you will have to push the auto button again, and possibly again to get it to find your current input channel.
You may need to turn your computer off and then back on again.

You may need to connect your monitor using a different connector, example via VGA, DVI or HDMI. It all depends on the connection you have at present.
Blue Connector is VGA.
White connector is DVI.
HDMI is very narrow conector usually black.

Please be sure to rate this session!
Thanking you
damnor01

There is a power supply problem and inverter board issue, cause usually bad capacitors in the above mentioned, sometimes they bulge at the top indicating they are open, repairs can run to the point that it may be cheaper to replace the monitor.