UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

Dave Moll · 21st Jul 2019, 4:15 pm

Two questions: 1) Is it just the other party you can't hear and can you hear your own voice? 2) Is this a new problem, or were you never able to hear the distant party?

If you can't, and never could, hear any sound in your receiver (earpiece), it may be that either this or the secondary of the induction coil is open-circuit. Try a multimeter across first the receiver inset. If that is OK (sensible-sounding resistance reading), locate the induction coil if you can, otherwise post pictures of the circuitry both above and below the circuit board so that someone else can.

If your combination of answers is different from the above, report back and let's see where we can take it from there.

21st Jul 2019, 4:15 pm	#9
Dave Moll Dekatron Join Date: Feb 2005 Location: West Cumbria (CA13), UK Posts: 6,131	Re: RTT 56B not ringing. Two questions: 1) Is it just the other party you can't hear and can you hear your own voice? 2) Is this a new problem, or were you never able to hear the distant party? If you can't, and never could, hear any sound in your receiver (earpiece), it may be that either this or the secondary of the induction coil is open-circuit. Try a multimeter across first the receiver inset. If that is OK (sensible-sounding resistance reading), locate the induction coil if you can, otherwise post pictures of the circuitry both above and below the circuit board so that someone else can. If your combination of answers is different from the above, report back and let's see where we can take it from there. __________________ Mending is better than Ending (cf Brave New World by Aldous Huxley)