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1C2 - Green goop from ringer area

Started by NostalgicNut, November 19, 2023, 03:05:02 PM

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Hi.  I have a what I believe to be a Western Electric 1C2.  I do know it's a 1C2 as it's stamped 1C2C in yellow on the bottom of the upper compartment.  But I've had this payphone for several years now.  Bought off Ebay.  I have it hooked up to a bluetooth cell phone adapter.  More so just to hear it ring on occasion.  I can make calls and answer calls but the receiver is very hard to hear.  But not really a problem as it's mainly a working display piece. 

Now I took it apart today to rig the gate to deposit the coins into the coin box instead of the coin slot.  But when I took it apart I noticed this super sticky green goop on the side of the coin box.  Then noticed it on the bottom of the coin box housing.  Took the top off and you could see where it dripped down from the ringer area, down a circuit board, down some wiring, onto the plastic cover on the totalizer, and on down the phone.  Alcohol is getting it off but man is it a mess.  I'm wondering what it may be?  IF I need to worry about using the phone  ?  And if it's something repairable (if it's a problem anyway)? 

I've attached a picture of where I think it's leaking from. It looks like it's leaking from the two metal parts with the up arrows that say TOP.  Labeled Western Electric 328D, 73.52.  Would be great if it was just a glue but I don't see how a glue would suddenly start going soft in an air conditioned room. 


As previously discussed, this is the same problem that some 1A2 linecards and various other systems, have. 

Green silicon compound is leaking from what are supposed to be hermetically sealed relays.


Here is a blurb from a telephone company engineering bulletin.


Here is an excerpt from a 1979 BSP that shows Western Electric was addressing the problem of encapsulate leaking from these types of relays.
     Improvements to overcome silicone contamination
     of the relay have been included on
     Issue 12 and subsequent issues of the 400D KTU
     (MD). Repaired units containing these changes
     can be identified by a star or C stamped on the
     label after the issue number or by the new label.


Thanks for the replies G-Man.  At least I now know that they are hermetically sealed relays and a silicone compound leaking out.  I'm relatively new to all this so haven't been able to find much info on them.  Probably not using the right terms or looking in the right spot.  Would you happen to know what these relays control?  I'm still looking to see if I need to replace them or can just clean it up and leave them alone based on my uses of the phone.   


Your picture did not load properly. Probably too big. See this topic on posting pictures:
More pictures would help in identfying it.
Harry Smith
ATCA 4434

"There is no try,
there is only
do or do not"


I shrunk the picture down. Hope that helps.


Quote from: HarrySmith on November 20, 2023, 12:54:38 PMYour picture did not load properly. Probably too big.

The thumbnail would not load because one side of the image was 4,000 pixels and the image had rotation coding in its EXIF meta data.

Reducing the 4,000 to 3,000 is all that was needed to post the higher resolution image, as attached here: