Author Topic: Dial / hook switch contacts  (Read 1340 times)

Offline Tom B

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Dial / hook switch contacts
« on: May 16, 2011, 05:06:58 PM »
I have a 302 that's got a problem which I think is related to the dial or hook switch contacts. The phone carries on ringing when I pick up the receiver. It also won't dial out - anyone point me in the right direction?
Tom

Offline Phonesrfun

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Re: Dial / hook switch contacts
« Reply #1 on: May 16, 2011, 06:40:09 PM »
Not enough information.

Do you get a dial tone when you pick up the receiver to start with?

Was it once working, then suddenly stopped, if so, what were you doing at the time?

This could be a wiring issue, a bad transmitter connection, or the two switch issues you asked about.
-Bill G

Offline Tom B

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Re: Dial / hook switch contacts
« Reply #2 on: May 17, 2011, 02:50:41 AM »
Bill
I don't get a dial tone when I pick up the receiver, just a quiet hum.  The phone was working before I took it out of service because there was a crackling noise when I used it. I changed the receiver element and the noise remained. I decided to check again, and that's when I discovered that it didn't connect when called. It rings, but nothing else
« Last Edit: May 17, 2011, 04:11:04 PM by Tom B »
Tom

Offline dsk

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Re: Dial / hook switch contacts
« Reply #3 on: May 17, 2011, 07:02:48 AM »
If I don't remember wrong, the 302 has all the dc current going through  the transmitter, try to take out the transmitter, and just short the 2 springs, If you get the dial tone, the transmitter, and those contact spring is where find the fault.

dsk

Offline deedubya3800

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  • My 1942 Ivory 302
Re: Dial / hook switch contacts
« Reply #4 on: May 17, 2011, 07:27:28 AM »
DSK, your memory is good. That could very well be where your problem lies. Check the transmitter. I'm thinking either your transmitter element isn't making contact with one of the springs, a wire going to the transmitter is broken or loose, or current isn't passing through the transmitter. Those would surely be easier to check than the dial and hookswitch.

For example: A 302 with a missing transmitter will not give a dial tone or stop ringing when picked up, but there will be some very low noise in the receiver when it's off the hook.
« Last Edit: May 17, 2011, 07:31:37 AM by deedubya3800 »

Offline Tom B

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Re: Dial / hook switch contacts
« Reply #5 on: May 17, 2011, 12:50:46 PM »
d_s_k and Deedubya
Thanks for the info - I'll test and report back later ;)
Tom

Offline Tom B

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Re: Dial / hook switch contacts
« Reply #6 on: May 17, 2011, 04:12:20 PM »
This issue has been sorted - that's why this forum is invaluable. Thank you.
Tom

Offline deedubya3800

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  • My 1942 Ivory 302
Re: Dial / hook switch contacts
« Reply #7 on: May 17, 2011, 09:56:50 PM »
Yes, I've found these folks quite helpful as well!  :)

But do tell: What turned out to be the problem?

Offline Tom B

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Re: Dial / hook switch contacts
« Reply #8 on: May 18, 2011, 03:52:05 AM »
I cleaned and adjusted the contacts which sorted the dial tone problem, and switched the transmitter element which cleared the crackling noise. ;D
Tom