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Re: Flat screen monitor
If the backlight was out it would stay on but you would see nothing (or very very faint) ....test it on another device...laptop or PC...I'm thinking it works still but maybe your video card bit the dust or maybe computer is not getting past the post (bios boot)...
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I had the same problem with this monitor (Samsung 943nw) When turned on it would only stay on for less then a full second. When shining a light on the screen I could see what was on it, so it was just the backlight that was shutting down.
After I turned down the brightness of the monitor, the next time I powered on the screen the backlight stayed lit and it was back to normal.
Ok, another words, monitor powers up for few seconds and shuts down by itself. If green LED on the front panel turns off as well or stays on? If stays on, then inverter turns into protection mode because of old backlight lamps. If it turns off in same time with an image on the screen, then there are some bad electrolytic capacitors in the power supply.
I think you have the display shut off. the button on the bottom left will shut screen off. It will come on for a few seconds if you touch the screen, but will shut off again. just push the display button again and it should stay on.
There are more than one inverter circuit for this model. One is prone to have poor solder connections in the transistors Q8 & Q10.
Another can be repaired by replacing 2 1uF electrolytic capacitors near the center edge of the board between the lamp sockets.
The backlight or inverter may be bad. With the monitor on and the room dark, hold a flashlight very close and shine it on the screen . If you can see the normal display the monitor is OK but the backlight or the inverter which provides proper voltage to the backlight has gone bad.
Check to see if the image is Dimmed. Chances are the power supply on the FPD is either dead or not supplying power to the back lights.
Your problem is the power supply or the inverter on your board, you can replace it and it will be fixed. Easy Fix REALLY EASY FIX (inverter is what supplies power to your backlights. A lot of the times the reason a monitor goes black and the green power button is on, is because the backlights shut off. in most designs of the 1730 the inverter is embedded on the power supply. That is most often the case on this problem. Power supply/Inverter=Replace it and you will have a spanking new looking nice monitor working again. :)
It totally sounds like the backlight is toasted. If that is the case you will have to replace them. Normally if the power inverter is shot, the monitor will power up briefly at least and then shut off. If you can use a flash light and see some sort of image on the screen you know that your VGA chipset works however your backlight(s) are burnt out. If not, more than likely your power supply (power inverter chipset) is broken and needs to be replaced..