Electronic repair !

[Electric Al]

I have a Viking Telephone Line Simulator, Model # DLE-200B , that does not work !
Does anyone know where I an get it serviced ?
The manufacturer says that it is too old , but I would like to have it operational .
I do not have the schematic for it!

Can any suggest a solution ?

 

[poor mystic]

Hi
Do you mean this http://www.ntcp.com/contents/en-us/p893.html
What is the problem with it?