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Joined: Jul 2006
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I am an environmental consultant. I have a client with an old, probably defunct telephone panel board with numerous 1A2 400D KTU cards.
My issue is that a green colored liquid is leaking (very slowly) from the cards and we have been unable to identify its source or the exact make-up of the liquid.
Any help or insight would be greatly appreciated.
Ideally an MSDS of the source liquid would be optimal, but at this point I'll take any info I can get.
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Joined: May 2002
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From all the cards? I can't think of any liquid of any kind in these cards. Are you sure it's not just moisture and corrosion? Copper, moisture and presence of battery cause a green looking gunk.
Retired phone dude
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Joined: Jul 2006
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we are looking into that and not coming up with a moisture source. that may be the way to go, potentially analyzing a bulk sample for Cu to see if it is the primary constituent, aside from water.
I also have a photo. Let me see if I can attach it.
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Joined: Jul 2006
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not seeing a quick way to attach. am I missing a shortcut? I have a pick with the liquid visible.
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Joined: May 2002
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I'm not good with the picture thing. I know you have to have a host and link it but that's about all I know. I sure someone will help out in a bit if not I'll see if I can get someone to help ya.
Is it coming from a particular part of the card? those things are nothing but relays, resisters, diodes, and capacitors that's about it, might be a transistor or two.
Retired phone dude
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Joined: Jul 2006
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That is probably it, but I have no familiarity with the equipment.
If you have an email address, I could send the pic direct. One photo in .jpg format.
The email tab above your postings is set to private.
No big deal, completely up to you.
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Joined: May 2002
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Let's give it a bit to see if you get some help on the picture. I'd like it posted for all to see, could help someone else in the future.
Bill
Retired phone dude
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env guy
If you want to send the pic to me or link address I'll get it posted for you. For the liquid it could be a leaky capacitor if there is a large electrolytic on the board it would most likily be the power supply filter cap.
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Joined: Dec 2004
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Merritt, The 400 series KTUs are all dry caps, there is nothing I can think of that would contain a liquid unless there has been a liquid / high humidity issue (leaky roof, wet mop, broken water pipe, you know the drill). Green would normally mean corrosion due to induced moisture and battery. Green Jello? I prefer lime.  Is this KSU in a high heat or corrosive area? Basically the board is no different than any computer board of that vintage and the components are generically the same. Good luck --- let us know what you see, jb. KLD
Ken
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