Question about Rosewill R900J 19" Flat Panel LCD Monitor

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If one computer monitor is becomes off and on in by second whats the problems?

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It does the same thing when attached to another PC?
Common problem in LCD monitors are due to bad capacitors in the power supply, you can Google that.
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 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.

Posted on Mar 25, 2011

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My monitor works good for a second when i start it and then the screen becomes dark but you can see that it is still working. You see a little bit what is on the screen.


The problem can be caused by failed capacitors in the power supply, inverter circuits, lamps. You need to open it up and inpsect inside for bad caps first, post back what you see inside so we can guide you further, see example of failed monitors due to bad caps/lamps/inveter: http://s807.photobucket.com/home/budm/allalbums

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1 Answer

When i start the moniter its lights for seconds


The problem can be bad power supply due to bad caps, bad backlights inverter, or bad lamps. You need to open it up tell us what you see inside first, see example of faile monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums

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1 Answer

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