20 Most Recent Samsung SyncMaster 204T Monitor Questions & Answers

It does the same when attached to another PC? Video cable is good?
If it is the monitor problem, then more likley to have bad caps in the power supply section, look for caps with domed tops first.
If you are going to DIY and already try the monitor with another PC, 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 monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/ 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 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: 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. Please leave rating if it helps.

I just started having the same problem! The green light flashes, but the monitor is blank. None of the button work (menu, source, etc...) and nothing changes when I disconnect it from the computer. I was suspecting a bad graphics card at first, but now I'm thinking the monitor itself is bad?!

we need to check first the switch button, remove that and look for replacement. if still encountering problem well proceed trouble shooting ckt side.

Most likely, this is an orientation sensor.
The monitor supports a "MagicRotation" feature, which automatically switches between portrait and landscape mode when the screen is rotated. I think the part you damaged is a mechanical orientation sensor required for this feature. This would explain why it had a loose metal ball inside (shorts two contacts together, depending on the orientation).
So I guess, you should still be able to use the monitor without the sensor. Uninstall the "MagicRotation" utility (if you had it installed at all) and set the orientation manually.

Look for bad caps in the power supply first, see example of failed SAMSUNG monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums
report back what you see so we can guide you further.

It sounds like you are in the Store Demo Mode. Turn it off and see if that fixes it. https://www.manualslib.com/manual/145519/Samsung-Syncmaster-Fx2490hd.html?page=27 Reset

Reset Samsung FX2490HD LS24F9DSM to factory state

monitorsfaq.com https://www.monitorsfaq.com > Factory reset > Samsung How to restore or reset Samsung FX2490HD LS24F9DSM. Reset to its factory state Samsung FX2490HD . How to hard reset monitor. Clear all settings or format. ..

The connecting cable or the video card would be the first suspects. Try a different cable to connect the monitor first, if there is no change, the video card in the computer would be second to look at. Can simply connect a different monitor to your computer to troubleshoot this. If the testing monitor works, it will be the graphics card that is the issue.

5 year old hyjacker, vinay. you forgot to say connected to what? is the screen only dim or dead.? even more important clue. RTM read page PDF 17, ? the OSD screen must work or the monitor is dead http://downloadcenter.samsung.com/content/UM/201205/20120517112305649/SA10-04Eng.PDF base pages https://www.samsung.com/us/support/owners/product/lcd-monitor-a10-series

Press the auto key of your monitor to get the best fitted resolution for your window, each monitor has a limited graphic capability of which it is designed. if the production is not ok consult your manufacturer.

try here Download Center Download Software Firmware Drivers Manuals Samsung