Question about Samsung OKIDATA - OKI Microline 590 Printer

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Microline 520 printer power supply.

The part # on the board is: fist line T 2d, second line P521. the Part is a four pin IC but I have had no luck finding it and my boss is being a pain about it.

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  • Patrick Patterson
    Patrick Patterson Aug 19, 2008

    Sorry, I guess I was reading too fast and did not see all of your response. I have 70 volts on one side of each of the couplers with no output these couplers seperateone side of the board from the other.

  • Patrick Patterson
    Patrick Patterson Aug 19, 2008

    I found one bad cap @ 2.2ufd 450v I'll let you no if this fixes it as soon as I get the part. All of the caps I carry in stock are for two-way radios the highest voltage on them is 25v to 50v.



    Thanks

    Pat Patterson

  • Patrick Patterson
    Patrick Patterson Aug 19, 2008

    Thanks!!! Dan



    let me know if there is anything I can do for you in the future.



    Pat

    n5sli@sbcglobal.net

    w5rgv@w5rgv.net

    Cell: 956-357-1601

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  • 4,234 Answers

I posted a responmse in the initial posting.

Dan

Posted on Aug 19, 2008

  • ABRsvcs Aug 19, 2008

    Again, I doubt that these are your problem. Can you post a closeup photo of the area? You may be reading DC voltage which won't be particularly useful in this case. I suspect that the power supplies are not oscillating properly. These supplies are similar to those inside of VCRs and require a kick from a small cap in the primary side in order to work properly. I would look for a small cap in the 2.2-4.7ufd range at 200V as the culprit first.



    Dan

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