328, dead transmitter and always off hook - UK Vintage Radio Repair and Restoration Discussion Forum

Millay_2010 · 18th May 2010, 10:59 pm

Hi

I seem to be having rather two many problems with phones than normal.

I have wired up a 328 to work on plug and socket, and when i plug it in, the microphone is dead, or at least I dont get any side tone in the receiver.

The dial cannot dial out it just returns to dial tone, and i cannot hang up the line is constantly open when the phone is plugged in.

I have removed the dial and strapped terminals 4-5 on the dial terminal board as advised for CB working, checked all the wires are correct and that continuity is good. I have had a brief check of the induction coil and that seems fine.

Any ideas? Its worth noting that although it is a 328 it has no keys installed.

thanks
Andy

russell_w_b · 18th May 2010, 11:32 pm

Quote:

Originally Posted by Millay_2010

Hi

I have removed the dial and strapped terminals 4-5 on the dial terminal board as advised for CB working, checked all the wires are correct and that continuity is good. I have had a brief check of the induction coil and that seems fine.

What happens when you plug her in with the dial strapped out? Do you get sidetone (mic working)? Does the cradle switch cut off the dial-tone? Does the telephone ring when requested to do so, and, if it does, can you answer it satisfactorily?

Millay_2010 · 19th May 2010, 12:27 am

Feeling rather embarrassed now, I solved the problem, I've been buying fax leads and using them in a junction box with the original wiring and, well, I completely fouled up the wiring in the junction box, the 'A' leg was going to the bell wire etc. Basically because the fax lead uses its own wiring and I was using the wrong diagram to decipher what wire was what.

On that note I shall sheepishly walk away and thanks Russell for the offer of help.

18th May 2010, 10:59 pm	#1
Millay_2010 Hexode Join Date: Feb 2010 Location: Hull, East Riding of Yorkshire, UK. Posts: 315	328, dead transmitter and always off hook Hi I seem to be having rather two many problems with phones than normal. I have wired up a 328 to work on plug and socket, and when i plug it in, the microphone is dead, or at least I dont get any side tone in the receiver. The dial cannot dial out it just returns to dial tone, and i cannot hang up the line is constantly open when the phone is plugged in. I have removed the dial and strapped terminals 4-5 on the dial terminal board as advised for CB working, checked all the wires are correct and that continuity is good. I have had a brief check of the induction coil and that seems fine. Any ideas? Its worth noting that although it is a 328 it has no keys installed. thanks Andy

19th May 2010, 12:27 am	#3
Millay_2010 Hexode Join Date: Feb 2010 Location: Hull, East Riding of Yorkshire, UK. Posts: 315	Re: 328, dead transmitter and always off hook Feeling rather embarrassed now, I solved the problem, I've been buying fax leads and using them in a junction box with the original wiring and, well, I completely fouled up the wiring in the junction box, the 'A' leg was going to the bell wire etc. Basically because the fax lead uses its own wiring and I was using the wrong diagram to decipher what wire was what. On that note I shall sheepishly walk away and thanks Russell for the offer of help.