Question about Dell UltraSharp 2407WFP 24" LCD Monitor

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Whole screen flickers on and off continuously for a few minutes. Is good for a while then goes bad again

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You may have dying power supply, backlight inverter board, backlight assemblies. You will have to do some in-depth troubleshooting and take some voltage measures before and after the problems.
Please read my guide and look at the pictures before DIY repair.
It is similar to 2408; http://s807.photobucket.com/albums/yy352/budm/Dell%202408WFP%20Rev%20A02/

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 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://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

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.

Replacement board: http://www.lcdrepair.us

Posted on Nov 12, 2010

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