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I have a Proview MA-782KC 17" TFT Monitor and when I switch it on the green power light flashes but nothing is appearing on the screen. When it was working properly the green light remained aon all the time.

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  • Anonymous Oct 09, 2008

    This is my daughter`s monitor. same model. Green light flashes but no display. Looking very carefully I can see that the screen illuminates ever-so-slightly on and off. I think the problem may be in the power supply circuitry. If I can find a circuit diagram I`ll open it up and see if I can find anything.

    Ian

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I`ve opened it up and there are several 470uF capacitors in the power circuitry which are obviously bulging, meaning they are in considerable distress. I am ordering some replacements and will fit them when they arrive and see if they get it working. I`ll let you know :)
By the way, I don`t recommend this for anyone not versed in this kind of repair. Messing about inside the power circuit of a monitor can KILL - even unplugged, unless you know what you are doing, so please take care.

Posted on Oct 18, 2008

  • olemuso Oct 21, 2008

    Cured!

    I replaced all seven electrolytic capacitors in the low-voltage secondary side of the power supply circuit and the monitor now works fine.

    The circuit numbers are all around C212, C213 etc... and the values are 470uF / 25v (six off) and 220uF / 25v (one off). All are rated at 105 degrees C

    I hope this helps.

    O

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