Yamaha CS80

> 	David Rogoff <mailto:cs80@...>
> April 30, 2011 7:11 PM
>
>
> Hi all.
>
> I'm finishing up fixing an ill 4VS.  I've got it pretty much working 
> and added CV/Gate inputs to SEM 1-3.  The last thing I need to do it 
> clean some of the keyboard contacts.  How the hell do you get the 
> keyboard assembly out and get to the contacts?????   I feel kind-of 
> dumb, but there's got to be an easier way that disassembling the who 
> thing!
>
> Thanks much,
>
>  David
> ------------------------------------------------------------------------
>
> 	David Rogoff <mailto:david@...>
> April 30, 2011 8:56 PM
>
>
> Hi all.
>
> I'm finishing up fixing an ill 4VS.  I've got it pretty much working 
> and added CV/Gate inputs to SEM 1-3.  The last thing I need to do it 
> clean some of the keyboard contacts.  How the hell do you get the 
> keyboard assembly out and get to the contacts?????   I feel kind-of 
> dumb, but there's got to be an easier way that disassembling the who 
> thing!
>
> Thanks much,
>
>  David
> ------------------------------------------------------------------------
>
> 	Kent spong <mailto:kent_spong@...>
> May 1, 2011 12:28 AM
>
>
> Hi Dave,
>
> You need to remove the screws underneath and sides of the case and 
> lift the
> whole thing out and case then remove the keyboard.
>
Thanks Kent.  Yes - it's the 6 screws on the bottom and the screws that 
hold the handles to the back.  Then there's 6 screws in the metal bottom 
that hold down the keyboard assembly.
Found something interesting - and badly designed - when I got in there.  
There's a circuit board that hold the keyboard scanning chips.  It hangs 
upside-down from the metal from of the Pratt-Reed keyboard assembly.   
It was held on in four places with ... glue!  Which, of course, after 
30+ years, had lost its grip, leaving the board dangling by its wires :(
A trip to the hardware store for some 5-minute epoxy, and it should be 
good for another 30 years!

  David


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