Question about Samsung SyncMaster 940BE 19" LCD Monitor

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No Video on Monito - Blue Power lite is on

We have a Samsung 940B monitor that just quit working one day.  We've checked connections (even swapped them).  We have the front panel power on light (blue).  But the bottom line is there is nothing displayed on the screen, even on power up.

Should I tear in to it, or just junk it?

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  • Rocky50 Nov 01, 2007

    No faint image... so it must be broke-broke. Thanks for the assistance.

  • Doov Nov 09, 2007

    I have the same problem, I think. Is the blue power light in the bottom right corner on steady or like mine, blinking blue? I bought mine at Costco about 1 1/2 years ago and I'm going in today to get it replaced...hopefully. Otherwise, a great monitor up to now!

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Hello.
Sounds like the backlight inverters or CCFL tubes are at fault.
Turn the monitor on with it connected to a known good SVGA signal source that is sure to have video. (Like the computer when it is operating.)
Hold a flashlight to the screen of the monitor and see if the faint video can be seen through the screen.
If the video is faintly present on the monitor screen using this method of illumination, then either the CCFL inverters / Inverter board has failed, or the CCFL tubes themselves have gone bad. (CCFL = Cold Cathode Fluorescent Lamp)
This should give you a better idea of how to proceed, repair or replace.
If it is the inverters or CCFL, Repair costs for a DYI project could range from $70 to $120 depending on the level of your expertise and parts availability.
Good luck with your quest.

Posted on Nov 01, 2007

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Posted on Jan 02, 2017

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