Monitor going to blank screen

[SithSolo1]

Have a roughly 2 year old 22" Dell monitor that has been used as a secondary display. Worked flawlessly until recently. Now it randomly goes to a blank screen(no light output). Power button stays lit. If you cycle the power button the screen pops right back up but goes out again about 5 secs later. If you cycle the power at the outlet it works anywhere from 3mins to a few hours.

Tested on different hardware(470 & 560ti) and swapped cables.

Should I just toss it or am I missing an easy fix?

 

[Ketchup]

Is the monitor or the power brick extremely hot? Sounds like there is something wrong in the power cord. Any cuts?

The second thing that I am thinking is a software issue. Any recent driver updates? Might wanna check the windows display settings.

 

[SithSolo1]

I just hooked it up and tried it again. It was good for about 7 mins from a cold boot and then black screen. When it goes black the power led never dims like in power save mode, just stays bright. I ran my hand across the vents, back panel, and the screen; still cool.

Its been tested on two different systems in different homes. The DVI and power cables were swapped with known working cables and still no dice. The only things common to the tests are the panel and the stand.


I'm just gonna chalk it up to something in the display board going bad and see if I can find a place to recycle it.

Thank you for your suggestions, I hadn't thought about a heat issue

 

[KingFatty]

Wait, it might be a simple fix, if you have a bad capacitor in the circuit for the backlight.

Are you mildly handy with a screwdriver and soldering iron?

Open up the display and look at all the capacitors. See if any have leaked, or swollen, or burst. Also, do a google search for your exact monitor model, along with another search term like capacitor or backlight; maybe there is already a handy guid to walk you through identifying the capacitor and how to order the replacement.

They are cheap to buy at Radio Shack or online, literally like $0.30 or something ridiculously cheap. You can buy capacitors that provide the same performance but with higher tolerance for more voltage etc.

I bought a display for $10 that was "broken" and fixed it this way.

Take a look:

Edit:
Also see:
http://tinymicros.com/wiki/Samsung_SyncMaster_204B_LCD_Repair

http://www.youtube.com/watch?v=Y7KQAWV3Vog&feature=related

 

[SithSolo1]

I've never soldered anything in my life, don't even own an iron, but I guess it can't hurt to open up and look. Worst case I still have a broken monitor, best case I have a working one.

Thanks