@cai20 to 0.5V will be part of the tolerance for your power board. I'd be far more concerned about if your power supply can provide the 5.3Amps for your PS2. BTW that could/would also be the reason why it shuts down on the 7.5V. Anyhow, if it does provide that amperage then use it on the 9V settings. If you are really unsure about it, use a resistor in between to decrease the voltage. As you might know you can figure out the resistance by R=V/A V is the difference in voltages (9-8.5=***0.5***) and A is whatever amperage your power supply provides. Like I said even that resistance is most likely so minimal that it becomes negligible. Let us know what you find out.
+
@cai20 the 0.5V will be within the tolerance for your power board. I'd be far more concerned about if your power supply can provide the 5.3Amps for your PS2. BTW that could/would also be the reason why it shuts down on the 7.5V. Anyhow, if it does provide that amperage then use it on the 9V settings. If you are really unsure about it, use a resistor in between to decrease the voltage. As you might know you can figure out the resistance by R=V/A V is the difference in voltages (9-8.5=***0.5***) and A is whatever amperage your power supply provides. Like I said even that resistance is most likely so minimal that it becomes negligible. Let us know what you find out.
@cai20 to 0.5V will be part of the tolerance for your power board. I'd be far more concerned about if your power supply can provide the 5.3Amps for your PS2. BTW that could/would also be the reason why it shuts down on the 7.5V. Anyhow, if it does provide that amperage then use it on the 9V settings. If you are really unsure about it, use a resistor in between to decrease the voltage. As you might know you can figure out the resistance by R=V/A V is the difference in voltages (9-8.5=***0.5***) and A is whatever amperage your power supply provides. Like I said even that resistance is most likely so minimal that it becomes negligible. Let us know what you find out.