Vintage Synth Repair

--- In vintagesynthrepair@yahoogroups.com, "jim" <leman@...> wrote:
>
> As this can be usefull to other guys, I posted the DX7 schem in the
> file section.
> enjoy !


Thanks for posting that, Jean-marie.  Unfortunately, mine looks to be
a bit different from those schematics.  Perhaps they are only
representative of the original DX7, not the FD-II model.  The power
supply from this one is all on one circuit board, and there is only
one fuse.  

One thing that I've noticed is that there is a hard, tan-colored
substance at the bottom of several of the caps.  I can't tell if it's
leakage, or some sort of thermal material that was placed there during
manufacturing.  The caps in question otherwise look fine (no bulges or
splitting).