Astral "the Knightsbridge" wont (won't) ring - UK Vintage Radio Repair and Restoration Discussion Forum

only1carra · 26th Apr 2012, 10:09 pm

Hi
I have a Astral Knightsbridge that has a bell but it wont ring!

I know the line is OK because I had one a different colour that did ring.

I have turned the switch on and off but still it wont ring.

Phone works fine otherwise.

Could this just be the phone on this particular line or is it a fault?
cheers

OscarFoxtrot · 27th Apr 2012, 12:25 am

It might be that this phone requires ringing on pin 3, and your socket is wired 2-wire with no ringing circuit on pin 3 of the socket.

As a quick test, if you plug it into a broadband microfilter, this will usually re-create the ringing circuit.

AndiiT · 27th Apr 2012, 2:44 pm

Hi,
I'm not certain but some of these phones may have been around pre-1981 when the "modern" plug and socket was introduced.

If your phone is/was one of these the conversion to plug and socket may not have been done correctly (if at all) have a look on Bob Freshwaters Site and see if you can find any information there under the section "Special range telephones"

Regards
Andrew

only1carra · 28th Apr 2012, 9:09 am

Quote:

Originally Posted by OscarFoxtrot

It might be that this phone requires ringing on pin 3, and your socket is wired 2-wire with no ringing circuit on pin 3 of the socket.

As a quick test, if you plug it into a broadband microfilter, this will usually re-create the ringing circuit.

Cheers for that reply, I tried it through a micro filter and still have the same problem, wont ring at all. Finding it very difficult to find any info on this phone either

Nickthedentist · 28th Apr 2012, 2:07 pm

Seems to be a very recent design, late eighties at very earliest I'd say, and possibly made/imported by Audioline:

http://www.britishtelephones.com/audiolin/knightsb.htm

With the phone disconnected, what reading do you get if you connect a resistance meter across the bell coils?

26th Apr 2012, 10:09 pm	#1
only1carra Retired Dormant Member Join Date: Oct 2011 Location: Preston, Lancashire, UK. Posts: 44	Astral "the Knightsbridge" wont (won't) ring Hi I have a Astral Knightsbridge that has a bell but it wont ring! I know the line is OK because I had one a different colour that did ring. I have turned the switch on and off but still it wont ring. Phone works fine otherwise. Could this just be the phone on this particular line or is it a fault? cheers

27th Apr 2012, 12:25 am	#2
OscarFoxtrot Heptode Join Date: Apr 2011 Location: Edinburgh, UK. Posts: 805	Re: Astal "the knightsbridge" wont (won't) ring It might be that this phone requires ringing on pin 3, and your socket is wired 2-wire with no ringing circuit on pin 3 of the socket. As a quick test, if you plug it into a broadband microfilter, this will usually re-create the ringing circuit.

27th Apr 2012, 2:44 pm	#3
AndiiT Octode Join Date: Aug 2005 Location: Saltburn-East, Cleveland, UK. Posts: 1,786	Re: Astral "the Knightsbridge" wont (won't) ring Hi, I'm not certain but some of these phones may have been around pre-1981 when the "modern" plug and socket was introduced. If your phone is/was one of these the conversion to plug and socket may not have been done correctly (if at all) have a look on Bob Freshwaters Site and see if you can find any information there under the section "Special range telephones" Regards Andrew

28th Apr 2012, 2:07 pm	#5
Nickthedentist Dekatron Join Date: Jan 2005 Location: Oxford, UK. Posts: 17,846	Re: Astral "the Knightsbridge" wont (won't) ring Seems to be a very recent design, late eighties at very earliest I'd say, and possibly made/imported by Audioline: http://www.britishtelephones.com/audiolin/knightsb.htm With the phone disconnected, what reading do you get if you connect a resistance meter across the bell coils? Last edited by Nickthedentist; 28th Apr 2012 at 2:13 pm.