Archive of the former Yahoo!Groups mailing list: Yamaha CS80

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Subject: Re: Is CS80 actually self-oscillating or I have another problem?

From: "pyjamagroove" <pyjamagroove@...>
Date: 2013-06-29

--- In yamahacs80@yahoogroups.com, Kent spong <kent_spong@...> wrote:
>
> You have logic whine comming from KBC1 and KBC2. Replace the cmos on these
> two boards. they are the 4001, 4069, 4013, 4019, 4073 and 4016. This will
> cure it.
>
> Best regards
>
> Kent
>

Back to work after a brake.....
Can you tell me if those can be any model or manufacturer of the CMOS 4000 series? I see there are 15V and 18V models for example. Thanks.