Why Pioneer Receiver power supply does not enter?
- JJoe MayAug 2, 2025
The power supply may not enter because the microcomputer is not reset. Confirm whether terminal RESET (11Pin) is "H". If it is not becoming "H", confirm the operation of the RESET circuit. It may also be caused by the AC pulse not being input. Confirm whether the AC pulse is input to AC input terminal (26Pin). If not, confirm the AC pulse generation circuit. Finally, the oscillation circuit of the microcomputer may not be oscillating, in which case the microcomputer or the oscillation circuit should be exchanged.