Vintage Synth Repair

--- Santos Menendez <smenendez@...> wrote: 

> Hi-
> 
> I own a Roland D-50 which has a problem which seems
> to be typical of 
> these keyboards.  The velocity sensitivity is not
> working properly.  

you dont need a new keyboard assembly.

you need whatever timer they use to detect note on
velocity to be fixed.... I assume it's a separate
timer because note on, note off and aftertouch works.

It's probably something to do with the PCB you
mentioned near the keys.

If you want solid information on what does what in the
D-50, buy the D-50 service manual. But really, you
probably can't buy an entire new PCB assembly for the
keyboard decoder, and you don't sound capable of
replacing parts at a chip level.... So your best bet
is don't even bother with getting the service manual,
just go to a synth tech and get him/her to fix it for
you.


julian


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