Korg Poly800/EX800 Users

Hey gang

I was just about to start on my 5th poly 800 mod when I noticed something that I haven't run into before. This poly doesn't have terminals to soldier a lithium battery to. Is this a very early model with a different motherboard?

Thanks Mike!

--- In korgpolyex@yahoogroups.com, Michael Hawkins <korgpolyex800@...> wrote:
>
> Yes, the early versions of the Poly-800 main board did not have a location for the lithium backup battery.
>
> And instructions for installing your own can be found in the Poly-800 Servicing file section here:
>
> http://f1.grp.yahoofs.com/v1/tFBtUSDu9aj3ccnxlZvE0mv7Zq6B08_Rsz514mGGfhYQ9yfYwvViPX_XY1T4-7YDiC_ycII1AXITVdEynUHq/1%29%20Poly-800/Servicing/poly8batt.txt
>
> Mike
>
>
>
>
> ________________________________
> From: eric justin <djericjustin@...>
> To: korgpolyex@yahoogroups.com
> Sent: Monday, April 15, 2013 2:43 PM
> Subject: [korgpolyex] Poly 800 mk1 with no internal battery terminals
>
>
>
>  
> Hey gang
>
> I was just about to start on my 5th poly 800 mod when I noticed something that I haven't run into before. This poly doesn't have terminals to soldier a lithium battery to. Is this a very early model with a different motherboard?
>

Hi all :)

Ahh .. panic over .. found it in the files section .. many thanks and well done on such a great group :)

you should do a data dial while in there too.


this rotary switch (NOT AN ENCODER)

http://www.mouser.com/Search/ProductDetail.aspx?R=SRBM1L1400virtualkey68800000virtualkey688-SRBM1L1400

can be placed in parallel with the +/- value switches.

turn the knob cw and value goes up,
turn it ccw and value goes down

easy, just find your select line for those switches, place it on one side of each switch, then other side to the proper cath side of the diodes linked to the data bus.

no extra logic or circuit needed

it's not a cheap switch, but even at $15 shipped it is a fair price for a cool mod that's easy to install.
you can't change the numbers too fast though, skinny knobs can be turned too fast, having a fat knob will help slow down the turning..  guess that's why early encoder data dials were fat too.. to make you slow down.

see it on my HAWK

Data Dial Demo

 

~Blaine

Many thanks for this info, got my poly800 backup and running linked to my Korg Kronos, the sound is awesome.