Equalizer · Pioneer · SX-780

Diagnosis: Overheating

The unit becomes unusually hot, shuts down, or enters protection.

Safe first checks

  1. Turn it off and allow it to cool completely.
  2. Make sure ventilation openings are clear and the unit is not enclosed.
  3. Check that speaker impedance matches the manufacturer's requirement.
  4. Do not continue using it if it overheats at low volume or with no speakers connected.

Next step

A technician should check bias, DC offset, output devices, and the power supply if the condition persists.