Xpantastic!

--- In xpantastic@yahoogroups.com, "cord_mueller" <xpander@...> wrote:
>
> I have a Matrix-12 keyboard somewhere that I bought brand new but I
> used a couple of the keys. I wonder if you can swap keys from your 
old
> board to make it work? PM me if interested. 
> 
> --- In xpantastic@yahoogroups.com, "A" <thanksmalc@> wrote:
> >
> > Hi all...
> > 
> > So I was given a very beat up Matrix 12 recently.  I thought it 
had
> > power supply issues because the fuse appeared to be fine.  For the
> > heck of it I bought a new one and sure enough...the old bird 
powered
> > right up.
> > 
> > So here is where I'm at...
> > 
> > The self-tuning feature shows that all tuning is failing. 

Did you try the DAC test/calibration stuff in the service manual?
 
> > 
> > The keyboard has some stuck notes. 

As in "stuck on?"  The M12 keyboard has the grey-metalized-rubber-
with-PC-board style keycontacts and can be cleaned very easily.  This 
is very easy to disassemble/reassemble.  I've had good success using 
91% rubbing alcohol from a supermarket and q-tips, although I'm sure 
there's a more pro solution.  Do you have stuck note problems using 
MIDI to control your M12 or just with keys? 

> > 
> > The infinite rotary dials can be spotty.  
> > 
> > The displays are dim in some areas, though thankfully I can still 
see
> > all data.

Did you try the section in the service manual for VFD voltage 
adjustment?

> > 
> > Oh...and the clear plastic sheet over the graphics has gone cloudy
> > (unless wet) and the paint is worn down to bare aluminum above the
> > keyboard in some places...

I think the display board is mounted on a hinge that allows easy 
access to the in-side of the plastic sheets, maybe wipe them off?

> > 
> > I am thankful in advance of anyone able to offer some 
advice/assist in
> > bringing this awesome bird back to full health points.

Good luck to you

> > 
> > Also...I read on one site that the keyboards on these are similar 
to
> > both the Kawai K3 and Akai AX80...is that true and can they be 
weighted?

I'd like to do that myself

> > 
> > Thanks!  Looking forward to hearing from tha group.
> > 
> > Peace.
> >
>