Western Electric 102b loud pop when dialing

[Jf510]

Poplar1... I just remember having an extra capacitor that someone on here had me buy a year ago to get an old oak box to ring.  I tried the extra on my 534 with the wiring you suggested and it works fine. No more popping. 😊 now I have to get more so I can do the same to the rest of the 534's I have. Thanks for the tip.

[MMikeJBenN27]

That sounds way over my head. I have 2 more 102b wired to a 534 and 3 202's wired to a 534 and they are all popping when the dial returns to rest. Even my 202 wired to a 584A pops. The 634's & 684's I have are perfect. I don't know how I ended up with so many 534's. They work fine except that popping is annoying.

The 634 and 684 have either one 4-wire condenser or a pair of condensers, one for speech, one for ringing.  The 534 has one 2-wire condenser, and those often eventually "leak", which causes that loud snap, or so I have been told.

You can though convert your 534s to 634s.  Just buy a 4 wire condenser, and make it electrically the same as your 634.  Otherwise, you will just have to live with it.

Mike



Mike

[poplar1]

Poplar1... I just remember having an extra capacitor that someone on here had me buy a year ago to get an old oak box to ring.  I tried the extra on my 534 with the wiring you suggested and it works fine. No more popping. 😊 now I have to get more so I can do the same to the rest of the 534's I have. Thanks for the tip.

Good to know that adding the extra capacitor worked

[poplar1]

The 634 and 684 have either one 4-wire condenser or a pair of condensers, one for speech, one for ringing.  The 534 has one 2-wire condenser, and those often eventually "leak", which causes that loud snap, or so I have been told.

You can though convert your 534s to 634s.  Just buy a 4 wire condenser, and make it electrically the same as your 634.  Otherwise, you will just have to live with it.

Mike



Mike

The most common 4-wire 195A condenser (capacitor)is from a 302. The talk capacitor is 2.0 uF and the ring capacitor is 0.5 uF. 0.5 is fine for the high impedance B1A ringer, but the 8A ringer in a 534A is low impedance. The 8A requires a 1.0 uF, as does the B3A ringer from a 306 set, when used without a tube

[MMikeJBenN27]

Good to know that adding the extra capacitor worked

Glad you fixed it without having to convert your subsets.

Mike

[Jf510]

Thanks Mike and thanks for your info.