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Elo E123233, 1 Green LED, no sound, blank screen, not recognized by PC

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    #1

    Elo E123233, 1 Green LED, no sound, blank screen, not recognized by PC

    Hi everyone, I inherited an Elo touch screen monitor from work and as it was going to go to the junk yard i figured id try and save it since it was once a nice monitor, and it doesnt appear to be very old.

    I get nothing when i press the power button, no flickers even in pitch black.
    (it does have 2 status LEDs located on the bottom of the monitor one of which lights up as soon as the power cable is plugged in)

    I took the LCD assembly and plugged it into another monitor and inverter and it displayed an image perfectly.

    If i disconnect CN05 which leads to the video board, the touch board's LED's start lighting up and flashing, and the 2nd LED located on the bottom of the monitor starts lighting up green and blinking.

    I am getting about 3.275v on all the pins (except ground) at CN02 on the video board which goes to the power/display buttons on the side of the monitor.I dont know if thats a normal voltage for a power button or not.

    My suspicion is the issue is with the video board or the power button but i have no idea how to go about proving this.

    Any help/thoughts on what i could try would be greatly appreciated!

    Thanks to anyone who has time to help!
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    #2
    Re: Elo E123233, 1 Green LED, no sound, blank screen, not recognized by PC

    Did you Check fuse on mainboard F202

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      #3
      Re: Elo E123233, 1 Green LED, no sound, blank screen, not recognized by PC

      both f201 and f202 read 0.000 and beep (fluke 11 DMM) when checking for continuity.

      Thank you for your suggestion!

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        #4
        Re: Elo E123233, 1 Green LED, no sound, blank screen, not recognized by PC

        Would anyone happen to know a good place to find the audio/video mainboard where i would buy a replacement? I've checked Ebay and searched for the part number on google but im not finding anything.

        It seems the sites that say they stock it, look like they are for manufacturers as there's a "Target price" listed. Do you think they would sell qty 1? to individuals?

        part on back of the mainboard says "E144591 PCBA Rev H"

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          #5
          Re: Elo E123233, 1 Green LED, no sound, blank screen, not recognized by PC

          i will tell you one thing,
          i would replace all the caps on the left side of the video board with panasonic FR series.
          that design will cook the caps in that area.

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            #6
            Re: Elo E123233, 1 Green LED, no sound, blank screen, not recognized by PC

            Ill give that a go! thank you for the advice!

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