bt 7746 conversion ringer problem - UK Vintage Radio Repair and Restoration Discussion Forum

mattdehat · 24th Aug 2023, 3:11 pm

After picking up a bt746 phone I decided to make it work at home, I got it to call out and in BUT the ringer does not work. would anyone be kind enough to help me with my problem. thank you

Dave Moll · 24th Aug 2023, 3:47 pm

If you wish to wire it using the ringing capacitor in the BT master socket, which is the preferred option, your best plan is to follow the instructions here. Alternatively, it can be rewired back to the original plan, using its internal capacitor, by wiring it according to the original N diagram.

mattdehat · 24th Aug 2023, 4:33 pm

Quote:

Originally Posted by Dave Moll

If you wish to wire it using the ringing capacitor in the BT master socket, which is the preferred option, your best plan is to follow the instructions here. Alternatively, it can be rewired back to the original plan, using its internal capacitor, by wiring it according to the original N diagram.

many thanks problem now sorted

24th Aug 2023, 3:11 pm	#1
mattdehat Diode Join Date: Oct 2021 Location: Llandudno, Clwyd, North Wales. Posts: 3	bt 7746 conversion ringer problem After picking up a bt746 phone I decided to make it work at home, I got it to call out and in BUT the ringer does not work. would anyone be kind enough to help me with my problem. thank you Last edited by mattdehat; 24th Aug 2023 at 3:25 pm.

24th Aug 2023, 3:47 pm	#2
Dave Moll Dekatron Join Date: Feb 2005 Location: West Cumbria (CA13), UK Posts: 6,050	Re: bt 7746 conversion ringer problem If you wish to wire it using the ringing capacitor in the BT master socket, which is the preferred option, your best plan is to follow the instructions here. Alternatively, it can be rewired back to the original plan, using its internal capacitor, by wiring it according to the original N diagram. __________________ Mending is better than Ending (cf Brave New World by Aldous Huxley)