The Case of the Incorrectly liten lights- 6 button key set

[poplar1]

You can also try swapping phones around to see if the trouble follows the phone when it's plugged into a different cable. That way you can see if it's the phone or the cable.

[WesternElectricBen]

Okay, I tried a different lead, and the issue is still present, so this probably means the issue is inside the phone.

No, it was not working before the buzzer.

I will try to troubleshoot w/ out intercom.

Should I disconnect the leads you were talking about?

Thank you,
Ben

[Phonesrfun]

To me, it really sounds like a wire that is crossed over to another, or a wire that has become loose allowing a DC path throuh the lamp circuit.  Look at each and every wire and make sure they are connected where they should be.  Did you print a schematic of the phone?

[WesternElectricBen]

To me, it really sounds like a wire that is crossed over to another, or a wire that has become loose allowing a DC path throuh the lamp circuit.  Look at each and every wire and make sure they are connected where they should be.  Did you print a schematic of the phone?

No, I do not have a wiring sketch, but for right now, I will make sure none of the leads are connected to others. There is this long mettal connecting strip which connects two opposite terminals together, but that shouldn't be the issue.

Ben

[WesternElectricBen]

I put my screwdriver across a white-blue and a white-orange pair on the same vertical strip. And only the fist light light.

Does that mean something to anyone?

Ben

[Phonesrfun]

You should probaly print one out and try to get a feel for how the wires are connected.  A key set is kind of a busy place to start understanding wiring diagrams, but if you can begin to understand them, it is a skill that you will definitely use as a collector.  Especially as a collector of key sets.

[poplar1]

I put my screwdriver across a white-blue and a white-orange pair on the same vertical strip. And only the fist light light.

Does that mean something to anyone?

Ben

If you short W-O and O-W, this shorts 1A to A1 thus activating the relay for the first line, which turns the lamp on for that line.

[poplar1]

More info:

The intercom works on line 1 button, 4 button, and line 5 button

Ben

That's why I suggested disconnecting the intercom amphenol, to see whether the intercom lamp is being activated by a short causing the intercom to go  off-hook or by the lamp lead being crossed with another lead inside the set.

[WesternElectricBen]

Oh. So that really isn't that important.

I should look for a diagram for it. Will a WE diagram work for it? Its a ITT body with a NT handset.

Ben

[WesternElectricBen]

More info:

The intercom works on line 1 button, 4 button, and line 5 button

Ben

That's why I suggested disconnecting the intercom, to see whether the intercom lamp is being activated by the intercom going off-hook or by the lamp lead being crossed with another lead inside the set.

Oh, okay,

Now I understand what your saying.

Ben

[WesternElectricBen]

Okay,

I did what Poplar1 said, and I disconnected the intercom. The line buttons work like normal, but the last one won't light. It is the same way on another phone.

So, does that mean that it was wired incorrectly, or are two terminal wires touching each other?

Ben

[poplar1]

Since the intercom lamp is no longer lighting up when you are on line 1 or line 4, I think it just means the intercom lamp is not crossed with another lamp.

Just to recap, the problem only happens from one phone, but causes all the other intercom lamps to come on when you are on Line 1 or Line 4 of that one phone? None of the other phones cause the same problem? If not, did you try moving the trouble phone to another cable?

Perhaps it means that the intercom is turning on--thus lighting the intercom lamps--whenever you are on line 1 or line 4 or line 5. See if you can hear the relay inside the intercom clicking the same way when you push Line 1, Line 4 and intercom. This would mean it thinks there is a phone off-hook on line 5 (black-green/green-black pair).

[poplar1]

I also wonder why the lamp doesn't work on the red phone. This is the slate-black lead for the lamp using common ground for return. Line 5: Black-green/green-black are Tip and Ring, Slate-black is lamp.

[WesternElectricBen]

Since the intercom lamp is no longer lighting up when you are on line 1 or line 4, I think it just means the intercom lamp is not crossed with another lamp.

Just to recap, the problem only happens from one phone, but causes all the other intercom lamps to come on when you are on Line 1 or Line 4 of that one phone? None of the other phones cause the same problem? If not, did you try moving the trouble phone to another cable?

Perhaps it means that the intercom is turning on--thus lighting the intercom lamps--whenever you are on line 1 or line 4 or line 5. See if you can hear the relay inside the intercom clicking the same way when you push Line 1, Line 4 and intercom. This would mean it thinks there is a phone off-hook on line 5 (black-green/green-black pair).

Yes, the phone's issues show on the other phones, which don't have them. And I switched around the cables with the known 100% good one.

So you are saying I should trouble shoot those pairs. I did notice which I thought was quite weird, the red-green and violet-slate pairs (or is it white slate?) and the black-blue and black-orange and capped off.

Ben

[poplar1]

If the problem happens only when selecting a line on the green phone, regardless of which cable it's plugged in, and not when selecting a line on another phone, then I would look for some miswiring inside the green phone.

Also, I don't follow what you are saying about "capped off" leads--where are you seeing these?