Discussion about the Korg PolySix synthesizer

Hi -

Sorry, a newbie question. I just picked up a Polysix that needs 
minor repairs. Fortunately the battery is fine, at the moment. 

I'd prefer to replace it with a rechargeable one similar to the 
original to avoid the extra modifications that seem to be necessary 
when using a lithium battery. (I know that may still leak one day, 
but not anytime soon.) I thought I saw the part described once, but 
now I can't find the reference. Any advice...?

I also need to replace one of the patch selection buttons, which is 
functional but worryingly loose. And after reviewing past comments 
I'm still not 100% sure whether the pitch bend wheel should be 
sprung or not (though I'm guessing not)...

Thanks for any comments,

Ben

b_j_glover wrote:
> I'd prefer to replace it with a rechargeable one similar to the 
> original to avoid the extra modifications that seem to be necessary 
> when using a lithium battery. (I know that may still leak one day, 
> but not anytime soon.) I thought I saw the part described once, but 
> now I can't find the reference. Any advice...?

For my Trident MK2, I removed the old battery (carefully with soldering
iron) and dragged it to an electronics store. The guy there didn't have
the exact replacement but a suitable part.

As this replacement didn't fit onto the circuit board I made a little
seperate (bread)board which I connected with a cable and some pin
connectors.

Cons: Is a lot of work
Pro: If the battery should leak again, it won't mess up the CPU board.
Furthermore it is easier to replace again now.

The original battery of the Mk2 seems to be the same as used in the
Polysix, at least according to this picture:
http://analog.no/mods/korg_polysix_battery_leakage.htm

Reichelt Elektronik (large German electronics mail order company) still
has the orginal battery for sale - but the thing is that you have to
order parts for 10\ufffd and the battery costs 1,75\ufffd there. Grrr!

But the original replacement is most easy to install.

> I also need to replace one of the patch selection buttons, which is 
> functional but worryingly loose. And after reviewing past comments 
> I'm still not 100% sure whether the pitch bend wheel should be 
> sprung or not (though I'm guessing not)...

I can't judge on that.

Best,

   Niels