Question about Koss KS4192 System

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When we first start the unit, it has gotten quite a loud whirring sound. We turn it off, then turn it back on and the noise virtually disappears - it's still there, but greatly diminished. I suspect something like a worn drive band, but haven't had the unit apart yet to see. Any hints?

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That is the fan on start-up and the high pitch is the power supply components heating up make shure that the main fan is working always it will be slow at low volume if it quits you run the risk of the power supply failing

Posted on Jun 18, 2011

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