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I HAVE CASIO HZ 600 HAS A PROPLEM NO ANY ACTION DEAD BY MAKING SHORT CIRCUT AT THE POWER REGOLATOR ON THE MAIN BOARD AND I DIDNT KNOW WHAT HAPENED PLEASE HELP ME TO FIX IT THANKS.

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  • Music Master
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The way you troubleshoot these problems is to use a current limited power supply to drive say 1/2 amp into the circuitry. Then you use a millivoltmeter to find the point where the tiny voltage developed across the short goes to zero.

Sometimes you can monitor the tiny voltage and use freeze-mist to cool suspected components and look for the tiny change that occurs with temperature change.

I have other methods but they use expensive probes that you can actually follow a pulse on the current path to the short.

Posted on Oct 09, 2010

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