20 Most Recent Dell UltraSharp 2407WFP 24" LCD Monitor - Page 2 Questions & Answers

Rupert597, It should if unit's ac line cord is plugged into a outlet. Do you have a SURGE or TRANSIENT voltage protected power-strip connected to your GEAR!!! 12fixlouie

Why are people giving their opinions rather then answering the question? My monitor just died and I need to replace the main power filter cap and transistor Q654, I need the part number for transistor Q654 as I think the OP does as well.

unplug it to reset try that

I'm sorry, i can't help you. The traditional ways of obtaining the service manual have come up short and my contacts in the industry say that because the model is relatively new the service manuals for each particular revision will be available in several years.

You can try to unlock the display/monitor by pressing and holding down the MENU button on the monitor screeb (OSD menu buttons) while the monitor is powered on. Hold it for about 9 to 15 seconds, then release it. Let us know how it goes.

most likely an internal component. to further isolate it, try using another video cable to connect it to the computer, test it on another computer and try another monitor on your computrr. if the monitor fails even with a different cable and computer, time to get it repaired or replaced if under warranty.

Please connect the monitor to another PC so as to confirm the case before we can probe further. If the fault is persistent then it seems that +B power within the board will be a reference to the fault. Open after disconnecting power supply and check. If this is higher than specified the SMPS circuit needs to be checked. If not check all connectors on the panel for any loose connection or else it can be related to faulty input, failure of the video selection and processing circuit which will require a signal test.

this is the problem of the signal cable . replace it and see whether problem is solved or not . if persists , then open the monitor and look whether dry solder or not . if found out , clear it .

The LCD panel has buckled when it fell and it snapped. This is unfixable, the panel would have to be replaced,
Because a replacement panel costs $135 plus the shipping, it will be more cost effective to sell this one for parts and buy an entire new monitor.

You need to take it apart and check the caps in the power supply and fuses on the backlights inverter board, see my pictures here:
http://s807.photobucket.com/albums/yy352/budm/DELL/Dell%202408WFP%20Rev%20A02/#!cpZZ1QQtppZZ20

Read my guide to understand more:

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.

Try unplugging it from the electrical outlet for about 25 seconds. Then plug it back in and go to your settings if the power button turns the monitor back on if it does not work try it on another working computer. Sometimes this happens when the settings are two high of resolution when your graphics card cannot handle it. Hopefully the issue is not the monitor going bad. Thanks for using FixYa! Do not forget to place a vote for me if I helped you in any way. John

The cable getting signal from the computer probably disconnected from the back of the computer. Plug it back in.

Check the caps, fuses, DC voltage feeding the Inverter board (around 24vdc). It is similar to 2408 as shown here:
http://s807.photobucket.com/albums/yy352/budm/Dell%202408WFP%20Rev%20A02/#!cpZZ2QQtppZZ20

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 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.

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

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

hello

go to this dell link below -- ..
http://support.dell.com/support/topics/global.aspx/support/dsn/document?docid=361118


if it does not help you resolve the issue, get in contact with Dell support
http://support.dell.com/support/topics/global.aspx/support/dellcare/contact_technical_support?


hoping this served you well

When the switch is rotated to the correct position, run a piece of sellotape (or a strip of the plastic that comes on top of phone or watch screens etc) over the switch. Nearly invisible, simple, and solves the issue.

sgmw

its seems the switch is broken in this case youl have to order a new one and install it another way we fix this problem when parts are not available is to have a power switch installed on the main power cord just like the old lamps