[sdiy] Yamaha CS-60 issues

[Michael E Caloroso]

Can you say "planned obsolescence"?  I knew you could.

Yamaha is hardly alone.  Korg and Roland used proprietary chips too.

Nice to see reissue CEMs and SSM2x40s.

MC

On 10/5/20, Tom Wiltshire <tom at electricdruid.net> wrote:
> Yamaha have made a maintenance nightmare for their synths by their
> widespread use of proprietary chips.
>
> I was recently helping someone in Spain who was developing a replacement for
> the YM617 for a CS-40m. The YM617 is pretty much a
> multiplexer-plus-some-bits. But getting the timing right to work in all the
> different ways Yamaha used it is not at all simple. In the end, we were able
> to get it working in most situations, and that allowed us to move the
> remaining working genuine chips to the critical locations where our slightly
> imperfect clone wouldn’t do the job.
>
>
>> On 5 Oct 2020, at 19:53, al spitzley via Synth-diy
>> <synth-diy at synth-diy.org> wrote:
>>
>> I did replace those gates, and all the other CMOS on the KBC board. Having
>> compared it to my friend's cs80 I guess this middle octave being
>> unresponsive to the brillance keyboard control sliders is the way it is
>> supposed to be.
>>
>> The Kenton retrofit does not replace either the KAS or KBC. It works in
>> conjunction with the Yamaha chips. If any of those die you still have a
>> dead beast until you can source a ridiculously priced replacement chip!
>> Cheers
>> Al
>>
>> Sent from Yahoo Mail on Android
>> <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_AndroidEmailSig__AndroidUsers&af_wl=ym&af_sub1=Internal&af_sub2=Global_YGrowth&af_sub3=EmailSignature>
>> On Mon, Oct 5, 2020 at 8:55 AM, Florian Anwander
>> <fanwander at mnet-online.de> wrote:
>> Hello Al
>>
>> Am 02.10.20 um 19:06 schrieb al spitzley via Synth-diy:
>> > A retrofit would be amazing for me and many others.
>> I don't know the Kenton MIDI retrofits. Do they replace the KBC too or
>> only the KAC?
>> https://kentonuk.com/product/cs-60/ <https://kentonuk.com/product/cs-60/>
>>
>> Florian
>>
>>
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