Question about Xerox XG-91D 19" LCD Monitor
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Posted on Jan 02, 2017
two case trouble reason and need to do:
1) back light driver (inverter) works not stable and DC power protect. it near some component damage, should repair inverter by egineer.
2) back light (lamp) over life cycle so protect by the inverter, should change new lamp (regular parts)
3) DC power supply not stable or component over life( wave filter capacitor), should be replaced
Posted on Feb 07, 2009
This sounds like the backlight in your monitor has gone. I have seen this a bit in samsung LCD's. You can usually tell this by getting a torch and shining it on your screen. By doing this you should be able to see the display on the monitor.
The first thing to do is check the monitor is under warranty. Samsung have fairly lenghty ( 3 years i think) warranties with them. If it is under warranty they will replace it no questions asked.
Otherwise, you could try your hand at replacing the backlight yourself. I'm not too sure of what is involved in this, but know of people who have done it and said it was fairly easy.
I hope that helps, please don't forget to rate my answer if it does.
Posted on Mar 20, 2009
You may also have to check the IC/Transistors Inverter transfomer drivers, also should Ohm out the resistance of the transformers.
Posted on Mar 19, 2010
I would try VGA to VGA hook up first to narrow down the problem before start taking the monitor apart.
Most common failure in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). See example of failed monitors to get some ideas of what goes wrong: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further.
Posted on Apr 01, 2010
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