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.
>
Message
Re: [korgpolyex] Re: Question regarding backup battery mod.
2008-03-02 by Marcus Wilson
Hi there!
when you mention the headphone amp gone bad, I had that issue with one of my polys, and I managed to jury rig a repair, that has worked well
do you still have the first poly? and are you interested in a how to to fix the headphone amp? (im assuming that the L/R 1/4" trs connectors still output line level fine)
best regards,
Marcus Wilson
On 02/03/2008, at 3:08 AM, funkymonkeypeter wrote: