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Joined: Apr 2018
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Hi Guys, I am having a weird issue on my WECO 551B KSU. Everything was working prefect after punched down the station cable and the incoming Phone CO lines. Did some tests and everything was working.. After I moved the KSU to the side to clean up the mess the weird issue started. The buzzer in the phone turned on and stayed on continuously and will not turn back off. The only time its off is when a incoming line comes in and the interrupter starts up after the call is disconnected the buzzer will turn on continuously again. I swapped phones and line KTUs and the same issue. I am wondering if I have a open circuit that I am not seeing or not seeing what could cause this. Any thoughts on this? Thanks Brian
Last edited by morephones; 12/24/18 01:42 AM.
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Joined: May 2007
Posts: 5,058 Likes: 5
Moderator-1A2, Cabling
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Moderator-1A2, Cabling
Joined: May 2007
Posts: 5,058 Likes: 5 |
Is the buzzer for Intercom or CO signaling?
The only time a device will ring continuously is when it has battery and ground applied to both sides.
Do you have a short on the block between power (RB or 18/10V) and the buzzer?
You could possibly have a defective interruptor. I'll have to pull the prints, but you'll need to check where power comes into the interruptor and then where it's supposed to come out. Is power coming out constantly on leads where it shouldn't
It'll take me a while to find the paperwork. Sorry.
Sam
"Where are we going and why are we in this hand basket?"
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Joined: Dec 2007
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Retired Admin
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Retired Admin
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Here is the wiring diagram... Click me, Click me!
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Joined: Apr 2018
Posts: 154
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Hi Guys,
Thanks for the help. The buzzer is for CO signaling and its happening on all of the 2 lines so far. Very strange that everything was working right until I bumped it. So it could be something came lose....
Power is only coming out constantly the B1 and R1 leads.
I will take a closer look tonight. I do have a extra interrupter and see if that will fix the issue.
Thanks Brian
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Joined: Dec 2007
Posts: 6,808 Likes: 18
Retired Admin
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Retired Admin
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Everything was working fine until the telephone man was here! ![call call](/forum/images/graemlins/default/call.gif)
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Joined: Apr 2018
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MYSTERY SOLVED!!!!!!
It turned out it that it was the two 400H cards, once I tried a 400E card it worked..... If I remember right, few people said that the 400H cards are not so reliable. I also had a issue with the 400D card not ringing so I am thinking that card might be bad since I only have one of those.
Thank you for all your help.
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Joined: Dec 2007
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Retired Admin
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Retired Admin
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Everything was working fine until the telephone man was here! ![call call](/forum/images/graemlins/default/call.gif) I was right!
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Joined: May 2007
Posts: 5,058 Likes: 5
Moderator-1A2, Cabling
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Moderator-1A2, Cabling
Joined: May 2007
Posts: 5,058 Likes: 5 |
Glad you found the problem!
Sam
"Where are we going and why are we in this hand basket?"
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Joined: Feb 2014
Posts: 659
Moderator-1A2
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Moderator-1A2
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I also had a issue with the 400D card not ringing so I am thinking that card might be bad since I only have one of those. 400D cards won't ring on most modern lines unless modified. There may be nothing "wrong" with it, other than it being made for grounded ringing which doesn't exist anymore. There's a mod to make them work. PM me for details.
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Joined: Apr 2018
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Thanks right, I just remember that you did let me know about the 400d cards a while back Chris.
Professor Shadow, with my luck something always goes wrong.....
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OS 7030
by Bushmills - 09/03/24 12:42 PM
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