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Can anyone explain this "self healing" mystery.
Can anyone think of any type of failure mode in an electronic component that could account for the following weird case of my self healing LCD monitor.
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I've got this LCD monitor that's got a weird problem. If I put it in use then after a number of days or weeks of operation it will fail to start. It behaves as if it had no power connected, there is no display and the green "power on" LED doesn't even light up.
Once it's started, if I set the computer power management to "turn the monitor off : never", then it will work indefinitely as long as the computer is left running. However when I turn the computer off and try to restart, the monitor may not start up (it acts as if it had no power as described above).
The problem actually gets progressively worse. At first the monitor starts up properly all the time, then after a while it will not start up if you try to power up within a few minutes of shutting down (in other words you have to have AC power off for a few minutes before re-powering up). Then it progresses to the point where you have to leave AC power off for an hour or more or it won't start and eventually it gets so bad that you have to leave it overnight, and eventually even that won't do the trick.
But here's the really weird part, take it out of service for a month or so and then re-test it and it's back to working all the time (though it will deteriorate exactly as before if you keep using it for a number of days or weeks).
BTW. The model is : Samsung Syncmaster 173V
Can anyone think of any type of failure mode in an electronic component that could account for the following weird case of my self healing LCD monitor.
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I've got this LCD monitor that's got a weird problem. If I put it in use then after a number of days or weeks of operation it will fail to start. It behaves as if it had no power connected, there is no display and the green "power on" LED doesn't even light up.
Once it's started, if I set the computer power management to "turn the monitor off : never", then it will work indefinitely as long as the computer is left running. However when I turn the computer off and try to restart, the monitor may not start up (it acts as if it had no power as described above).
The problem actually gets progressively worse. At first the monitor starts up properly all the time, then after a while it will not start up if you try to power up within a few minutes of shutting down (in other words you have to have AC power off for a few minutes before re-powering up). Then it progresses to the point where you have to leave AC power off for an hour or more or it won't start and eventually it gets so bad that you have to leave it overnight, and eventually even that won't do the trick.
But here's the really weird part, take it out of service for a month or so and then re-test it and it's back to working all the time (though it will deteriorate exactly as before if you keep using it for a number of days or weeks).
BTW. The model is : Samsung Syncmaster 173V
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