Have Changed A New Mosfet But The Power Supply Will Not Turn On Polytron Speaker Is Active

HAVE CHANGED A NEW MOSFET BUT THE POWER SUPPLY WILL NOT TURN ON POLYTRON SPEAKER IS ACTIVE

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Main Power Supply Fix.

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Cara Perbaiki Power supply speaker aktif polytron mati total

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Power supply switching Polytron Cara pengukuran tegangan kerja mosfet