102 B1 w/534a subset issues

[Texas1880]

Working on my b1. New oldphoneworks cords. Wired it up, subset rings great, but when picked up it doesn't stop. Well, the subset stops ringing, but I hear the distorted ringtone in the receiver.  I cannot hear any sidetone in the set. No dial tone in the receiver when picked up from hook switch. Won't dial. I triple checked the wiring. I had the black wire removed, still nothing. Am I missing something obvious?

[Texas1880]

Oh and the subset worked fine with my d1 202, rang, dialed, the whole 9

[RB]

Wow! that is a small phone!
A B1, is it? may need to find one of those for a project.
Your hook switch blades look bent???
also, chk the dial contacts

[Texas1880]

Found the issue. Must be the transmitter is shot. When I hooked up my other E1 handset, the B1 works fine. First three photos are of older,9 line E1, which has a bad transmitter. Bottom pic is the E1 that works

[Texas1880]

Weird. When I swapped transmitters still didn't work. Could be bad receiver too?

[Texas1880]

Wow. Both receiver and transmitter are bad. When I swapped both with my other E1, the old 9 line handset works. Now I need both parts

[poplar1]

Both your transmitters are stamped 625A, which means they contain the newer capsule type F1 transmitter units inside. The F1 transmitter unit is the same one used in F-type handsets and is readily available.