DEll monitor E228WFPc turns blank after being on for an hour, then turns blank ever few minutes after that. Monitor Power light stays on contiously

make sure monitor is vented properly and not overheating.

More likely to be in the power supply/inverter baord: http://www.lcdrepair.us/E228WFPc-inverter-power.html

Look for bad caps first, but it can also be in the lamp assembly, you will need lamp tester and inverter tester to verify that.

http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague

I will assume that you already try this monitor with other PC and still get the same problem. Most failure in monitors are due to bad caps in the power supply, it can also be transformers, transistors, lamps. See example of failed monitors as guide: http://s807.photobucket.com/home/budm/allalbums
Post back what you see so we can guide you further.

The problem is with the power board inside the screen, when it gets hot it shuts down the screen unit it cools off.
It could also be that the power in is not connecting properly to the board i had that before and had to replace the screen it is cheaper in the end parts are to axpensive

Does the power light stay on? If so, you have an inverter problem. If the power light goes off, you have a power supply problem.

The problem may with the Ram inside your computer

Hello,

You have a monitor with a common problem. After a few years some LCD monitorswill blow a power supply. The problem is caused by parts calledcapacitors overheating in the confined space of he monitor. If you aregood at electronics repair/soldering you can usually fix he problem. Check out a few pictures on my web site www.ccl-la.com/badcaps.htmYou can take the back cover off your monitor and look for the bad parts,replace any that look like the pictues and your monitor should workfine. The capacitors do need to be installed with the correct + and -connections, note the stripe on the old one and insert the new one thesame way. If you don't want to try the repair yourself we offer a repair service for $35 plus shipping. I hope this helps, if so please rate my solution.

Buddy
Corporate Computer
www.ccl-la.com
Over 21 years of computer and printer support/repair

Unplug monitor form AC outlet, wait for few minutes and plug again.
Check cable attache to PC.
Hope this trick will work.

can u boot into the safe mode and see if the monitor will work cause it sounds like to me that you either have a driver that is failing or the monitor is failing

I perhaps can. I would think inverter or ccfl's.