Having problems with your Computer Monitors ?

Screen shuts off after 1 hour

\015 After 1 hour the screen turns off. You can turn the monitor off and then on and it works for a little while then dose the same thing. I was told that my power inverter had problems, I can't seem to locate a new one the part is xlm1700390004.\015

Answers :

I have a similar problem on an HP VS17C LCD. After running for an hour, the backlight drops off and I hear a high pitched whine from the power supply.

I looked for cold solder joints, and I see a DIP damaged by heat. I am suspecting that some capacitor is failing under heat load, and destabilizing the ballast circuit (and possibly damaging the DIP).

Only the backlight fails - I can see the LCD image when shining a bright light on to the screen.

I need a way to test so see what components are failing at operating temperature. All capacitors have an acceptable ESR when cold. My next test is to run up to operating temperature and test the caps again.

Typically, a failed solder joint or failed capacitor can cause this. Almost certainly temperature related.
Not Sure what OS you are using, but this should work if you are using Windows XP or Vista
\015\012
\015\012I think who ever told it was a Power Inverter problem is not on the right track?
\015\012
\015\012Try this first before replacing parts!!!
\015\012
\015\012Make sure the Power Option is not set to turn off the monitor after a set time, like the hour you are expiencing. START==>CONTROL PANEL==>POWER OPTIONS on the Power Schemes TAB you should see a setting there for your monitor. Set it to "NEVER" and your monitor will never shut itself off unless you do it manually.
\015\012
\015\012Your Screen Saver which is different can be set from the desktop. Right click and choose properties go to the Screen Saver TAB and set the time you would like for your Screen to go into Power Save Mode after a number of minutes.
\015\012
\015\012Hope this help sove your issue.
\015\012JZ
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