If the sound quality is poor, check the audio cables and connections.ĥ. Low volume or poor sound quality: Adjust the volume settings to ensure a suitable sound level. This is normal and happens because of the Auto Power Off function.Ĥ. Auto Power Off function: The instrument may automatically turn off even without any operation. To avoid this, turn off the mobile phone or use it farther away from the instrument.ģ. Noise when using a mobile phone: Using a mobile phone near the instrument can cause interference. Popping sound when turning on or off: This is normal and indicates that the instrument is receiving electrical power.Ģ. When the Yamaha PSR-E443 keyboard is powered by AC current and produces sound distortions when the start button is pressed, there are several potential causes and solutions:ġ.
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