Hello,
I am beginning a restoration project(one of my first, I'm still very new at this) on a Sumo Nine Plus and need some advice as to which version I should build. It doesn't help that the boards are not matched. One is Rev A, the other is Rev B, although at first glace they look to both match. Some pictures attached. I read a lot of Sumo threads on here, and it looks to be unclear whether the unmatched boards came from the factory of if they are repair jobs, but it seems that this is not the only unit out there like it. Any help with these questions will be greatly appreciated:
-Do the transistors look stock?
-Does anyone have schematics for REV. A and REV B? I have Rev. C.
-Is there a schematic for the power filter and rectification board on top of the transformer?
Thank you!
Jared
I am beginning a restoration project(one of my first, I'm still very new at this) on a Sumo Nine Plus and need some advice as to which version I should build. It doesn't help that the boards are not matched. One is Rev A, the other is Rev B, although at first glace they look to both match. Some pictures attached. I read a lot of Sumo threads on here, and it looks to be unclear whether the unmatched boards came from the factory of if they are repair jobs, but it seems that this is not the only unit out there like it. Any help with these questions will be greatly appreciated:
-Do the transistors look stock?
-Does anyone have schematics for REV. A and REV B? I have Rev. C.
-Is there a schematic for the power filter and rectification board on top of the transformer?
Thank you!
Jared