Question about Samsung SyncMaster 740N 17" LCD Monitor

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When switching monitor on, black screen, blue light just flashes

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Try it with another PC first to make sure it is not PC problem.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed SAMSUNG monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Posted on Oct 01, 2010

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Posted on Jan 02, 2017

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Have A Samsung 940Bw connected via DVI connection and has worked fine for last 3 years. Monitor was on and working fine went out of room and came back to black screen and the blue light flashing on the...


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.

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1 Answer

Samsung monitor blue flashing light, black screen


Hello,

The picture board of your monitor has developed fault. That is why the screen is black.

The best thing for you to do now is to take the monitor to a local repairer within your vicinity, because the fault is not something you can fix in other not to complicate issues..

The repairer will help diagnose and replace the faulty picture board and your monitor is back and better.

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Blue flashing power light only


kdavey53, "switch-mode-power-supply" for X193W is probably in shutdown mode due to having detected a FAULT CONDITION with itself or another circuit. Black screen = partial shutdown?? Black and Blank screen = full shutdown??? Which is it? Are you going to repair unit or use warranty? Have you seen video clips at youtube for "LCD monitor disassembly" and "LCD monitor repair" dealing with the most common black screen problem with ALL BRANDS of lcd displays? FYI visit www.ccl-la.com/badcaps.htm or www.badcaps.net or try wikipedia and search "capacitor plague" !!! Read more of my responses to other BLACK/BLANK screen owners for more options that you may have open to you. If not inclined to DIY repair, then have deep pocket$$! Your best shot and what I would do is buy new AND repair X193W to keep as working spare unit. Might only cost $10 in parts on a DIY. But you will need to do the research and understand the problem that you monitor is having. Do you understand what makes your screen "light-up"? Have you any of the new style "curlie-Q screw-in energy saving CFL light bulbs? Same basic principle! Just implemented in different way to produce RAW WHITE LIGHTon reverse side of what you been looking at. Look see only FYI www.ccfldirect.com and then you will know. I'm lmistyrel on aim or 12fixlouie on fixya Hope this was of some use.

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I tried the reset procedure, i've left it unplugged now for a week and upon ... Now the fifth died. This time, no illumination, just flashing blue light. ... The screen is completely black, the power button is dark blue and no amount of ... The monitor was gone for about 2 weeks (maybe 3) I left it plugged in and ...
deliverator.silverfir.net/?p=369

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Check to see if the video cable is connected at both ends securely.
Also, if possible, try another cable.

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Hi...there,
Well, it is seems your monitor backlight inverter got burnt... need to replaced a new one or repaired it.

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I think it maybe time to buy a new monitor

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I also have the exact same problem. My monitors been collecting dust for a while now and I can't find the solution anywhere.

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1 Answer

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Boot from safe mode and try a different pixel/color arrangement. Obviously a lower pixel and color setting.

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1 Answer

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