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(Topic ID: 131621)

Quantum Electronics 128x32 DMD Repair

By PinballManiac40

8 years ago



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    #1 8 years ago
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    BTF

    PinballManiac40

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    I have a Quantum Electronics 128x32 DMD that I had pinpointed an issue with images overlapping due to 12 volts being loaded down to 8 volts. It is appears the problem because of U8 since the voltage climbs back up to 12 volts when U8 is removed.

    Can anyone tell me all the lettering on the U8 part?

    I have a SN7405N part installed on the DMD I am repairing. I looked this part up and it seems that the voltage range this part can accept is only up to 5.25 volts max. So I am lead to believe this is the wrong part.

    Can anyone post a schematic for this display??

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    #2 8 years ago
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    PinballManiac40

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    Schematic anyone?

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    #3 8 years ago
     
    ???

    KenLayton

    In Memoriam

    US Olympia, WA

    12y 83,400 5,965

    I've never heard of Quantum Electronics before. The only companies I know of that make/made DMD's are Cherry, Babcock, and Vishay-Dale.

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    #4 8 years ago
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    PinballManiac40

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    Well, I am wondering if Quantum Electronics was bought out by Babcock. The DMD boards look so similar to each other. If that is the case, then U8 should be a DS88L12N.

    Anyone can confirm U8 is DS88L12N?

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    #5 8 years ago
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    PinballManiac40

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    Here is a picture of the Quantum Electronics DMD.DSC00874.JPGDSC00874.JPG

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    #6 8 years ago
     
    ESA

    stangbat

    KC Pins

    13y 86,900 3,111 19

    I have a Quantum DMD like the one yours in the pic. U8 on mine has a 7406 installed (SN7406N).

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    #7 8 years ago
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    PinballManiac40

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    Thank you for replying, stangbat

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