The Kawai & Teisco Analog Synths Group

I use my all the time with no battery.  I have all the settings for my presets written down.  All the memory locations default to the "Basic SX240" settings.   You can replace the nicad battery with a standard CR2032 Lithium battery with a diode in place so the lithium battery does not receive a charge from the synth charging circuit.  The battery would explode without a diode in place.








--- In kawai-teisco@yahoogroups.com, "jimmyb00ts" <jimmyb00ts@...> wrote:
>
> Hello all, I searched the archives so apologies if these subjects have been definitively responded to.
> 
> Can I use this synth without a battery (in other words, if I desolder the internal original NiCAD battery, will the synth work as normal, save for the inability to save presets?)
> 
> My SX-240, which I just received, is in near-mint condition cosmetically; however when I turn it on, four consecutive notes in the lower half of the keyboard are constantly droning. Does this mean I have circuit board damage from a leaking battery, or just that said battery is dead? 
> 
> Where can I find a replacement LI-ION battery as opposed to a NiCAD (I found links in previous posts to NiCAD batteries but I don't want to deal with a hazardous battery once again in 2024!)
> 
> Finally, how many of these synths were produced? I have read estimates including 1000 and 3000 total. Has anyone got the definitive number or something close?
> 
> Thanks for your patience and time!
> 
> - JB
>