Polysix battery

[The Old Crow]

On Wed, 5 Jan 2000, jhaible wrote:

> I just need three things:
> (1) Which battery to use ?

  I recommend a lithium coin cell and socket.  I use Panasonic #CR2032
batteries and a little socket the local Radio Shack sells.

> (2) Will it run without battery, so I can test the rest of the synth before
>       I buy a new battery ?

  Yes.  It won't save patches, of course.

> (3) Can I simply unsolder the two prongs that hold the battery, or is
>       it of the kind that will explode when it gets heated ?

  You can desolder the 3 pins, but it is much easier to just clip it off
the board with wire cutters and remove the leftover pins once the board is
out of the machine.

  In using the lithium battery. you want to replace R91 with a 1N914
facing the opposite direction of D15, and also remove the cap. C40.  Use
this section of the KLM-367 trace map to help in diagnosing damaged
traces, if any.  Also shows R91, C40.

http://oldcrows.net/~oldcrow/synth/korg/polysix/battfix/klm367_tracemap_sm.jpg

  This image comes from step 3 of my KLM-367 repair guide:

http://oldcrows.net/~oldcrow/synth/korg/polysix/repair3.html

  (The pictures are what should be helpful).


  --Crow

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