Yamaha CS80

h0merxxx wrote:

>I heard the rumor that if you press the two "wah" buttons (the two 
>square grey once) simultaneous you blow the whole CS-80.
>Could anyone of you confirm this rumor because I found no clue 
>regarding this in the manual.
> 
>
>  
>
Well, I'm sure I've done this before, but I'll try it again when I get 
home.  I just looked at the schematics 
(http://www.synthfool.com/schematics/cs80_1.jpg): the switches (SW-9, 
along the top of the schematic, about 3/4 toward the right) turn on FETs 
that act as audio switches, turn on/off the output of the wah circuit or 
the pre-wah signal.  The FETs' outputs are tied together, so if they're 
both on there will be a short. I'm a little rusty on my transistor 
theory, but I doubt this would hurt them.  It certainly wouldn't hurt 
anything in the CS-80 beyond those two FETs.

 David