I have a joyo California pedal that will not turn on. I've used battery and power supply and nothing worked. I have inspected the switches and input/output jacks. I need help please
You can check to see that the voltage from either the battery or PS is getting to the circuit. Some pedals will have a diode that is used in the power input section to protect the circuit from mis-applied power supplies. This diode could be bad.
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