Korg Poly800/EX800 Users

The square solder pads are in the middle of the main board between
IC18 and IC19

Thanks.


--- In korgpolyex@yahoogroups.com, "korgpolyex800" <korgpolyex800@...>
wrote:
>
> Hmm, where are the square solder pads for the battery backup found?
> What components are close to those solder pads?
> 
> Mike.
> 
> --- In korgpolyex@yahoogroups.com, "funkymonkeypeter"
> <funkymonkey3.14@> wrote:
> >
> > Yes, both R1 and D1 are present (right by CN9A (C-Cell battery
> > compartment connector to board)).
> > 
> > Thank you.
> > 
> > 
> > 
> > --- In korgpolyex@yahoogroups.com, "korgpolyex800" <korgpolyex800@>
> > wrote:
> > >
> > > Since you say your board has the square solder islands then I'll be
> > > very surprised if your board actually has an R1 and D1 at all.
> > > 
> > > Are you able to find them? If you are, where are they?
> > > 
> > > Mike.
> > > 
> > > 
> > > --- In korgpolyex@yahoogroups.com, "funkymonkeypeter"
> > > <funkymonkey3.14@> wrote:
> > > >
> > > > This is my second Poly-800.  The first had a problem with the
> > > > headphone amp and DC-in jack.  This one works great and I
don't want
> > > > to muck it up.
> > > > 
> > > > If some one can answer my question I promise not to tell
anyone what
> > > > really happened on 9/11.
> > > > 
> > > > So, to cut or not to cut?
> > > > 
> > > > 
> > > > --- In korgpolyex@yahoogroups.com, "funkymonkeypeter"
> > > > <funkymonkey3.14@> wrote:
> > > > >
> > > > > Regarding the instructions here:
> > > > > 
> > > > > http://analog.no/mods/korg_poly-800_mk-1_battery_backup.htm
> > > > > 
> > > > > 
> > > > >     *  Open the Poly-800 by removing all screws at the bottom.
> > Locate
> > > > > the processor board. This is the large circuit board next to the
> > > > > battery compartment.
> > > > >     * In the upper left corner you'll find Resistor R1 and
> Diode D1.
> > > > > Remove these. (Just cut the legs, but leave as much as possible
> > of the
> > > > > D1 legs, see next steps.)
> > > > >     * If you have a late revision MK-1 there will be two fairly
> > large
> > > > > solder "islands" in the center of the board. The battery is
> mounted
> > > > > here. The "island" to the front of the keyboard is ground.
> > > > >     * If you have an early revision you wont find this. The
> battery
> > > > > must then be connected by wires, the plus to the junction
between
> > > > > R1/D1 and the minus to the other leg of D1.
> > > > >     * Any 3V lithium with solder lugs can be used as long as it
> > is not
> > > > > to big physically for mounting to the board. A wristwatch type
> > (2025,
> > > > > 2032) is fine.
> > > > > 
> > > > > 
> > > > > 
> > > > > I have the model with the solder islands, do i need to cut the
> > legs to
> > > > > R1 and D1?  Or can I just solder to the islands and leave
> everything
> > > > > else intact? 
> > > > > 
> > > > > Thank you.
> > > > >
> > > >
> > >
> >
>