Placing 9 volts on a 5 volt rail will most likely cause the smoke stored in
the IC's to be released. Once the smoke has been released from the IC's
they become useless, unless you have some magic way of putting the smoke
back in.
9 volts on the 12 volt rail can also cause problems, when motors don't
spin, properly, they can over heat, and cause problems.
The motor isn't connected directly to the power supply pins, anyway. The
motors are actually controlled by the electronics on the circuit board, and
are monitored for correct rotational speed, up to 10,000 rpm on some drives.
The motors typically have multiple coils, and are really closer to a stepper
motor than a conventional DC motor. There are no brushes and no commutator
on these motors.
Perhaps you could provide more details, and someone here could find a
solution to your problem.
You should also be aware that some disks won't spin until they receive a
command from the controller, or they have the correct option jumper
selected.
5 volt regulators are as common as flies. They are simple to use (they only
have three pins, input, output, and a common ground). You'll need a
capacitor on the input and one on the output, that's it.
And you don't need to apologize for not knowing something, at one time or
another, everyone in this newsgroup has asked a question that someone else
new as just general common knowledge, it's part of the learning curve. Now,
just how do rocket engines work.
Ray
