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BG179341847 Theunit is dead. No matter how I press the timer button. The LED lights up, the ultrasound probe is silent. It is interesting that once everything was fine, I cleaned my glasses with it once. After one day I wanted to clean again, no ultrasound.

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BG179341847 Itis only one power supply unit, not with symmetrical output. The middle socket is connected to chassis. I have not (yet) measured how much noise is on the output voltage. For critical purposes I only use a linear regulated power supply anyway.

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