E228WFP display disappears

New E228WFP monitor bought February 10, 2009 (with Inspiron 530) and worked like a charm, until 2 days ago. The display became suddenly black but the light stayed on green power. The LED will stop, turned back on, monitor was beautiful, but it was same thing maybe 10 times during an hour or two. Updated, driver check viruses, etc. - all the usual troubleshooting - could not find any problem. Noticed that the monitor seemed to warm at the top of the back.  Monitor closed off during a few minutes, re-set and it was fine for 48 hours. Then this afternoon, the same question, and I immediately noticed that the back (top) seemed very warm to the touch. Stop in a minute or two, and the monitor when turned on, was no problem since. Were devoted to fashion when it is supposed to (orange LED) power saving and also sleep when put in this mode.

Display blacking out but the green light on is not normal of course. It does not have the thing "auto-detect" either when he died like that. I connected with the cable analog and checked all connections. Other than these a few times, it works normally and is beautiful. Both times it happened, it has been a little "blocked" in the area where the system is - in a corner of death of the room in a computer workstation - a lot of ventilation - but the time on the warm side (80 degrees or more?) Seems to be a problem only when the area seems a little hot and sweaty.  We do not run a/c regularly if it gets really hot and wet and connect all instances, track time.  Sorry for the long description I couldn't find anything in one search that others have experienced...

What is a heat/humidity problem?  I know that computers are sensitive and I was wondering if display blacking out was a warning of some sort that the monitor was about to overheat and it was a protection device (closing).  Any thoughts would be greatly appreciated. I bring everything that happens in the future, just so that everyone with this issue will be able to follow. I find these forums more useful, and this is why I submit it.  I doubt that the problem is a backlight problem, since it is immediately what re - set and when temperatures are 'normal' we never noticed any problems.

Thank you for your comments.

This is a note to those setting their monitors by installing a 500 k resistance. It was of a temporary workaround until the discovery of the root cause, i.e. C806 failure. I also mounted the resistance before someone on this forum discovered the faulty capacitor.

So the solution is to REPLACE C806 with a ceramic of SMT 1uF, 25V capacitor. I don't remember if it is of size 0402 and 0603. You can get away with a party to lead, and you can just fold the wires depending on the spacing of the filling. If you use a polarized capacitor, such as tantalum or electrolytic then the negative terminal should go on the keyboard that connects to D812.

My monitor has worked successfully for months after that I removed the additional 500 k resistor and replaced the capacitor in place.

Tags: Dell Peripherals

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