Don't take my word for it, I can only vaguely remember what was written in the interview. I seem to remember that it had something to do with the illuminated push buttons as well.
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Maybe some other German-speaking member of this group has the issue at hand?
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Stephen
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Gesendet:?Sonntag, 10. Januar 2016 um 07:55 Uhr Von:?"Bob Stewart bob@... [yamahacs80]" An:?"yamahacs80@..." Betreff:?Re: [yamahacs80] HIgh Pitched Whine
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Not had the time to investigatefor a while, but am aiming to get stuck in again next month.
Reckon the fitst thing to do is look at decoupling caps.
A while ago there was a report on a German synth collector/musician in KEYBOARDS magazine in which he described this problem. He had some decoupling capacitors replaced which fixed the problem -- maybe someone could look up more accurate details?
