Author Topic: What is required to make a WE 555 Cord Board work?  (Read 26277 times)

Re: What is required to make a WE 555 Cord Board work?
« Reply #90 on: June 26, 2019, 09:06:13 PM »
RB - See photo.  If you need more or better let me know.  It might help you to sort out the photo if you refer to the 2 PDF documents I posted yesterday.
« Last Edit: June 26, 2019, 09:14:40 PM by MuseumTelephones »
Jim McCall AKA MuseumTelephones Spokane Valley Heritage Museum volunteer

Re: What is required to make a WE 555 Cord Board work?
« Reply #91 on: June 26, 2019, 10:45:36 PM »
RB - At the BAT switch the 4 wires are Green, Gray, Or/Red and Red/Green.  They all go to the MISC terminal block terminals 1,5,8, and 12.  None connect up with the NL Relay or the 50uf capacitor.  Still the 125uf capacitor has not been found.  At this point I seriously doubt the 125uf is in this switchboard.  I just need to start connecting wires up and see what is left over if anything.  Jim
Jim McCall AKA MuseumTelephones Spokane Valley Heritage Museum volunteer

Offline RB

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Re: What is required to make a WE 555 Cord Board work?
« Reply #92 on: June 27, 2019, 12:07:52 PM »
Hi Jim.
Got the photos.
FYI those are prob the ONLY pics of the back side in existence! thank you.
The BATT switch wires shud be reconnected first. Then the BLACK wires.
I believe, one of the switch wires will be tied to a term point containing a jumper for the run back to the NL relay.
That's where it may pick up the 50uf cap.
The 125 uf cap appears to be an option. and was not needed on your board.
Start connecting wires, and when you get to a wall, we can go over it again.
Here is a pic of my best guess so far. I would verify each before connecting
ENJOY!!!
« Last Edit: June 27, 2019, 08:26:06 PM by RB »

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Re: What is required to make a WE 555 Cord Board work?
« Reply #93 on: July 03, 2019, 09:57:33 AM »
Jim
As with other components of this type of switchboard, some are of the BASE unit, "which I believe you have".
Some components are optional for configuration differences.
And, still some are updates to the base model.
The reason you cannot find the 125uf cap, is it is not there.
It would have been part of a mod made to the board after it was produced.
The mod along with a few other parts, was to stabilize input batt power, and has not been performed on your board.
I will post a copy of what I believe is closer to your schematic.
And, it will be easier to follow!

Re: What is required to make a WE 555 Cord Board work?
« Reply #94 on: July 03, 2019, 11:12:39 AM »
RB  WOW, how on earth did you find that?  Thank you very much.  Jim
Jim McCall AKA MuseumTelephones Spokane Valley Heritage Museum volunteer

Offline RB

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Re: What is required to make a WE 555 Cord Board work?
« Reply #95 on: July 03, 2019, 02:17:48 PM »
I have a lot of documentation, I glean every thing I can when I find something new.
There is a doc on Harry's sight that shows a less complicated version of your board, can't remember the name tho...

Re: What is required to make a WE 555 Cord Board work?
« Reply #96 on: November 16, 2019, 12:57:52 PM »
Hi
 I am rebuilding a WE 555 switchboard. 
About 2 feet of the internal wiring harness was disconnected between the internal controls and the terminal blocks. 
I acquired internal schematics from Harry Smith but T-66520-37 is missing. 
I REALLY NEED THE MISSING T-66520-37 for the rebuild.  This is for a public non profit museum.  Any help you can give me is greatly appreciated.

Thank you.
Jim McCall PE
AKA MuseumTelephones
Jim McCall AKA MuseumTelephones Spokane Valley Heritage Museum volunteer

Offline RB

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Re: What is required to make a WE 555 Cord Board work?
« Reply #97 on: November 20, 2019, 08:18:12 AM »
PM sent

Offline HarrySmith

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Re: What is required to make a WE 555 Cord Board work?
« Reply #98 on: November 20, 2019, 02:50:26 PM »
If anyone can supply the missing document I will add it to all the others I have stored on Google.
Thanks!
Harry Smith
ATCA 4434
TCI

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