Headphone/microphone hearness for # 19

[Bob Carriere]

But I still have questions....

Bruce thanks for the schematics.....much better than the crude one I drew up .

... I have used DeOxit on the brass contacts but did not seem to clean up much....... I may try the old "Brasso" next with a light touch.

Also I have both the No 1 Lollipop and the Big bulky No 10 fist type.
For the sake of this discussion I will focus on the lollipop type. I actually had a No 1 that was so dried up it was useless.... so I broke up the snatch plug and removed some section of cloth covering to see wiring color and physicaly and visually trace properly....

One more basic observation on the color wiring scheme

Referring to Bruce's schematics... top right hand corner.

When looking at the snatch plug as shown on the schematic...

Pin no 1 is Blue
Pin 2 is Green
3 is Black
4 is White
5 is Red

So is it correct to say power comes from connection A in the control box to pin 2 Green on the snatch plug.... goes through the earphone wired in series and back by means of the Black wire (common/ground) pin 3 and connection C.......?....... so applying power to pin 2 and 3 on the plug should give me sound on BOTH earphones....? which I can't get !!!!

Now for my observations/questions......please be patient....

When I apply power from the earphone cable from the radio to the RH earphone (RH on the schematic) directly to the two screws the RH earphone works. When I apply contacts to the black brass no 3 in the plug and the other to the screw of the RH earphone it works.

If I apply the same source of power directly to the LH earphone it will NOT work.......

I have done the same process to another no 1 and 2 other no 10 with the same results.... only one earphone can be powered.

I can establish contact with the pin no 3 black on the plug on all other 3 set BUT cannot connect power to any of the other contacts and get sound.

Leaving out pin 4 and 5 .. white and red.... I only have 2 other possibilities the blue or green..... but the blue seems to be cut off by the microphone switch..

I cannot understand why I cannot get sound off the LH earphone..... not all 3 sets could not be defective.....

If they are wired in series..... if I applied power to the RH black earphone and to the green wire leaving the LH earphone I should have sound coming out of both earphone..... but I get nothing...?

Why can't I ear sound from the LH earphone when I connect power directly to both screws/contacts of the earphone...? but it works on the RH earphone.

Is my power source from the transistor radio too weak to power both earphones......

Remember I repeated the same negative results on 3 other sets besides the one I took apart....?

I am sure glad not to be working with High Tension wiring as I would be fried by now.

Speaking of fried.... last Saturday when I had friends over to chat about WS 19 sets I showed them a Dynamotor that my Dad had used in the 50s/60s to engrave his initials on his tools using the HT 2 of the Dynamotor. So I fired it up with a CPP-2 power supply and the Dynamotor wirled into life......on 550v you can put the two HT alligator clips together than slowly pull them apart with a nice white/blue steady spark for about 5 or 6 mm before it stops..... I was encouraged to turn if off and put it away.

Awaiting your comments and guidance.

Bob C.