Leslie 32H series 3 speed switching

[mdrehkopf]

Dear Organforum
due to a blocked upper leslie motor one of the components inside of the amp is burned. I took a picture from the amp from the internet and marked the questioned component with a red box. It does neither look like a capacitor nor resistor to me. Does anyone know, what component and related specification is needed here ?
Thanks so much

[Douwe]

I don't know the board but it looks much like a fuse with some transparent tube around it.

[David Anderson]

I'm very familiar with these amps. That's a 250mA fuse to the speaker field-coil and & 6L6 screen supply. It's clearly shown on the schematic. The fuse is located in clear plastic insulating tubing.

The fuse is not connected to the motors, so a motor problem should not have any effect on it.

Also, are you saying that the picture of the 32H amp you posted is not your amp? It is crazy to be operating one of these amps at this point in history without replacing the paper coupling capacitors.

[mdrehkopf]

Dear David, dear Douwe

thanks a lot for your help. I took the schematics, realized that my fuse thought was wrong. All paper caps are removed since a while, it had a thorough service some years ago. During this service my technician modified the amp and leslie motors for fast/ slow instead of fast / stop. I cleaned the fast/slow switch at the organ, measured the Leslie cable between the organ and the leslie. I could not get the chorale speed switched on, until I replaced the Leslie cable with another one, that I still had. After swapping the cables, it worked. Good !!

I am happy now, the organ and leslie play as they should. I will work now a bit on the cable pins of the non functional leslie cable as this one was some years out of service. Lets see if I can use my "Corona we stay at home" extra time for some findings here.

Greetings to you and stay healthy
Matthias

[David Anderson]

As a side note, with 1950s amps like the 21H, 44W, 32H, and 46W with the 6-pin brake socket, the 6-pin brake socket can be used as a Slow motor socket. A 0.1uF capacitor should be added for relay arc suppression. It is not necessary to rewire the motor sockets on the chassis as it is on the 1959-1962 amps like the 22H, 47, and 51C.