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Joined: Mar 2007
Posts: 6
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OP
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Joined: Mar 2007
Posts: 6 |
Hello,
My efforts to get this phone working have led me to this forum. I'd just like to say up front that many of the members here seem to belong to that special, dying breed of techs who solve problems with real world experience, common sense, and dirty hands. But flattery aside .. here's the problem:
The phone is a 2554BMP. Inside I see early/mid 70's dates; it has the chrome plated metal hook. Everything about it functions perfectly except the mic. The phone rings and dials out, and you can hear the other party clearly. But the mic seems completely dead.
I've tried using a known-good handset and cord to no avail. I checked for continuity between the red and black wires of the handset jack and the first set of wiring posts inside the phone .. no apparent wiring problems there.
I'd be quite grateful for any thoughts on this. Thanks!
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Joined: Jan 2004
Posts: 6,648
RIP Moderator-Nisuko-Tie, General
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RIP Moderator-Nisuko-Tie, General
Joined: Jan 2004
Posts: 6,648 |
are you sure your using the right handset ?
it may take a carbon transmitter and if so a "known good handset " may not have the correct transmitter
if its not the transmitter or cord then its the network
I wouldn't think it would be worth replacing
welcome to the board BTW
Skip ------------------------------------
Serving SW and West central Fl since 1984
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Joined: May 2002
Posts: 17,722 Likes: 18
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Joined: May 2002
Posts: 17,722 Likes: 18 |
If you mean the handset transmitter, it's the old carbon type and they could go bad, usually not just totally dead though. What type dial pad does it have on it? Does it have the metal contacts around the dial and on the back? Could be something as simple as dirty contacts on the dial.
Retired phone dude
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Joined: Mar 2007
Posts: 6
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OP
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The transmitter seems to be completely dead. I can't hear myself talking, and the person on the other end can't hear me either.
I am pretty sure the handsets I'm using are interchangeable; they are both similarly aged WECO units. The one included with this phone does function when I connect it to my other WECO phone, although not particularly well.
Although it's quite possible there's something wrong with the network, I have plugged a different phone into the same wall jack and it seems to work fine.
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Joined: Jan 2004
Posts: 6,648
RIP Moderator-Nisuko-Tie, General
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RIP Moderator-Nisuko-Tie, General
Joined: Jan 2004
Posts: 6,648 |
the network is the part of the phone that all the wires plug into ,
are both transmitters the same color ?
look the same ?
Skip ------------------------------------
Serving SW and West central Fl since 1984
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Joined: Mar 2007
Posts: 6
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OP
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Joined: Mar 2007
Posts: 6 |
The two handsets I have are very, very similar. One's white and the other is red. Both have the same shape and size. If I unscrew the mouthpiece, a disc shaped microphone pops out. Both handsets are modular.
I'm a bit embarassed about my misunderstanding of "network", I'm a phone novice.
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Joined: Jan 2004
Posts: 6,648
RIP Moderator-Nisuko-Tie, General
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RIP Moderator-Nisuko-Tie, General
Joined: Jan 2004
Posts: 6,648 |
microphone=transmitter
so both are black and look the same ?
like bill said , it could be the dial , I do seem to recall a bad network can cause the problem also
Skip ------------------------------------
Serving SW and West central Fl since 1984
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Joined: May 2002
Posts: 17,722 Likes: 18
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Joined: May 2002
Posts: 17,722 Likes: 18 |
Those networks were pretty solid. I'm betting dial contacts. Does your dial have a hard clear plastic coving the bottom? If you have the older non solid state dial you will see copper color contacts on the back. Take a clean piece of printer paper fold it and run it through the wipers on the dial several times on each one. Mine as well do the contacts on the side while your at it. If that doesn't help, it could be as Skip said the network, or the dial is toast.
Retired phone dude
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Joined: Jun 2006
Posts: 512
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Joined: Jun 2006
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Bill, I have a tool in one of my bags for just what your talking about,used to have a removable screw top to reveal a flat,thin metal blade. I would use wd40 on it and then clean all the contacts around dial pad.Must be years since i've used it.
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Joined: Jan 2004
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RIP Moderator-Nisuko-Tie, General
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RIP Moderator-Nisuko-Tie, General
Joined: Jan 2004
Posts: 6,648 |
Originally posted by jacktel: Bill, I have a tool in one of my bags for just what your talking about,used to have a removable screw top to reveal a flat,thin metal blade. I would use wd40 on it and then clean all the contacts around dial pad.Must be years since i've used it. burnishing tool , I have a couple of them too , used them on some contacts not to long ago sometimes you needed to bend the contacts on the dial a little to get good contact
Skip ------------------------------------
Serving SW and West central Fl since 1984
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