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What fast food does to electronics

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    #1

    What fast food does to electronics

    As some of you may know, I work at a burger king. Today one of our credit card machines went down as the power supply sat in a puddle of water on the ground for an extended period of time and stopped working. We replaced it with a unused power supply from an unused credit card machine and everything worked fine. I took home this power supply to see if I could get it working again, and this is the horror I was confronted with when opening it:







    Holy.

    Butt.

    Nuggets.

    I sprayed down the PCB front and back with Simple Green and soaked the case in vinegar and wire wheeled the corrosion off of anywhere that had it, and it starts up now.
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    #2
    Re: What fast food does to electronics



    yuck! that looks disgusting
    I love putting bad caps and flat batteries in fire and watching them explode!!

    No wonder it doesn't work! You installed the jumper wires backwards

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      #3
      Re: What fast food does to electronics

      WTF! I'm showing this to my sis, brb.

      Edit: She compared this to a simulation of what happens to your arteries.
      Last edited by Ami Sapphire; 08-27-2011, 07:26 PM.
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        #4
        Re: What fast food does to electronics

        Most of it looks like mineral deposits from hard water or water with chemicals (cleaners) in it.
        .
        If the casing is aluminum it might be aluminum oxide.
        .
        Mann-Made Global Warming.
        - We should be more concerned about the Intellectual Climate.
        -
        Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
        - Dr Seuss
        -
        You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
        -

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          #5
          Re: What fast food does to electronics

          Yeah it's all just corrosion. The brown stuff is the aluminum corrosion mixing with the rust from that little bolt that holds a diode to one of the heatsinks. I just thought it was funny that this came out of a burger king. Kind of impossible for it to get grease in it, as it sits on the other side of a huge stainless steel wall that keeps the fryers out of view.

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            #6
            Re: What fast food does to electronics

            I'm always amazed at how far devices can be away from the kitchen and they still fill up with greasy dust. It's in the air.

            Supersize me!
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              #7
              Re: What fast food does to electronics

              Looks like sour cream and cheese! Eww!
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                #8
                Re: What fast food does to electronics

                One person at work used to service equipment for fast food places, and some french fry machine controllers had an internal setting to select one of ten different songs (he'd clean out the grease and reset all of them to "Yellow Rose of Texas"), and the power supply was double isolated, with one 60 Hz stepdown transformer feeding another 60 Hz stepdown transformer. He said McDonald's had their equipment sent to a Panasonic facility in Illinois that also fixed monitors. I had one of those refurbished monitors, and I hope Panasonic was more careful with the McDonald's equipment.
                Last edited by larrymoencurly; 09-11-2011, 01:47 AM.

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                  #9
                  Re: What fast food does to electronics

                  I would consider this unit a write-off.
                  My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

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