Thursday, July 15, 2010

Tormat Control Center (TCC) #01

The Tormat Control Center is the first part of the jukebox i'll investigate. Let's start with some pictures i made before cleaning:





The first thing i learned: the big red transformer is very special and if it dies it is difficult/expensive to get a new one. It supplies the whole box with different voltages: 6.3V, 6.5V, 24V, 155V, 325V, 6.1V and 30V (see service manual page 13043 for more information).
My favorite part is the selenium rectifier (see picture 3), i never saw one before. I don't know yet if you can still buy these or if i can replace it with a silicon-model, i'll find out.

After consulting the Jukebox-Mailing-List-Members my next steps are:
  1. washing the whole unit to get rid of the sticky, dusty dirt.
  2. check the transformer for shorts and then test the voltages. 
  3. replace all caps.
  4. replace all tubes (the 6x4 one is important, because "A short in this tube can fry the transformer. Old, "high mileage" 6X4's frequently have elements that short out." (James Alexander) 
If you have any comments, tips or other recommendations feel free to comment this post.
I will be back soon with pictures and informations. Stay tuned.

Wednesday, July 14, 2010

Welcome to my blog

Hello everyone,
my Name is Udo and i bought an old Seeburg LPC480 jukebox. It's a german model with 230V/50Hz. It's not working at the moment. I try to understand the whole mechanic and electric of the box, so it will be easier to repair it, i hope. I'll document all these steps, my questions and all the stories with the repair in this blog.