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Hi, i have this acer 1912 19" lcd monitor, it won't turn on (actually it will turn on if i wait for a few hours). if i unplug the vga cable and press the power button, it will display "acer "and then "no signal" then goes to standby(orange light). but if the vga cable is plugged in and i turn it on then it will display "acer" and then nothing, and i have to wait for hours for it to be back to normal. any suggestions please

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  • Rayno Jul 20, 2008

    its not my video card, coz i tried it on another computer and its the same.

  • Rayno Jul 20, 2008

    i'll just buy another one, thanks for helping

  • Rayno Aug 16, 2008

    Hi, I still have the same problem, but i have found out something interesting tho, power is ok on the power board, i did not find any capacitors leaking or anything, however, i have found that if i heat up the MCU on the motherboard with a hair dryer or something, then monitor starts to work. when its on, it will stay on until it goes into sleep mode or something, but when its warm, like if i leave it on for hours with out the screen going black, then it can be switched on and off

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That's kind of interesting that it comes on after a few hours; what changes during that time, I wonder?  I also wonder what changed since it worked last, for example a power-manager utility on the computer side which isn't quite compatible with the videocard; it seems unlikely though.  So; please describe what happens over those hours: is there a profoundly blank display, or generally dark display with no backlight?  Does it just pop back to perfect operation, or is the backlight out (as if the monitor's sleeping, though the power LED indicates awake) and eventually coming on so you can see what's there?
  I suspect that the backlight is starting to go and the startup circuit (which takes the most stress) is cutting that section out of operation for a while; perhaps the monitor's microcontrollers or a circuit protection device resets.  if you want to open it up you can clear out the dust and look how the backlight and its power units are fitted, and maybe take some pictures for reference, thermocouple readings (temperatures!) on the backlight power sections and backlight itself, solder wires on the backlight so you can get voltage and current readings, and get the backlight make and model.  You can probably convince the same backlight to go for a while longer by cleaning up the supply circuit and replacing a component (FET or circuit protection VOM) that's too hot because of its own derating.

Posted on Jul 17, 2008

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Is power steady on it or is it being lost intermittently - if its the later, bring it to a repair shop

If its steady power, try it on another computer, some manufacturers are putting software on their lcd's now so they only work with the same respective pc.

If it works with another computer fine its Your video card on the one it doesnt work with.

Otherwise Your going to have to get the drivers for that monitor onto that pc with another screen

Posted on Jul 17, 2008

That is what I do not understand. Http://www.notebook-drivers.com/ to be here whether we can help bring to you

Posted on Jul 17, 2008

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