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?
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Stephen�
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Gesendet:�Samstag, 09. Januar 2016 um 18:18 Uhr
Von:�"fanwander@... [yamahacs80]"
An:�yamahacs80@yahoogroups.com
Betreff:�Re: [yamahacs80] HIgh Pitched Whine
Von:�"fanwander@... [yamahacs80]"
An:�yamahacs80@yahoogroups.com
Betreff:�Re: [yamahacs80] HIgh Pitched Whine
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Did you succeed fixing this 5kHz whining?