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: Features a standard step-down transformer followed by a diode bridge (e.g., VD2–VD5) for rectification, providing a pulsating voltage of approximately 9V to 12V. Key Components : Transistor

: Often an unmarked NPN transistor. Common successful replacements include the , , or . : Features a standard step-down transformer followed by

: A frequent point of failure; it is often replaced with a 12kΩ (0.125W) resistor during repairs. Diodes : Frequently used parts include the or . VD2–VD5) for rectification

Стир. машина РЕТОНА УСУ-0707. Блок питания : Features a standard step-down transformer followed by

: A red LED (HL1) protected by a diode (VD1) indicates the generator is operational. Operational Highlights Efficiency : The

: If the power indicator is on but no ultrasonic waves are visible, it usually points to a burned-out transducer or a generator fault .