Wheel: logitech driving force pro

A mate of mine (who just got into simracing) just got the wheel just a few days back.
The FFB no longer works, were thinking its either a power supply fail or the mechanism in the wheel isn't corresponding to the power.
The wheel itself was working fine at first plug in, which was set at 200 degrees. When he switched it to 900 the FFB started to fail then went on to not work at all.
Whats the minimum voltage power for the wheel to run?
The wheels duration is unknown as the wheel isn't relatively new.

If you guys could help us out would be greatly appreciated!

EDIT: Thankyou guys for replying, his just gonna wait it out for a g25/7. Thanks again!

I would measure the voltage given by the power adapter with a voltmeter, and compare it to what it says on the adapter (it has to say what output voltage it should have).

Does it calibrate? If it does, are the LED's flashing afterwards?

Will try SRC, if his got one of those around.

Calzone, it no longer calibrates.
Only the left LED is flashing.

If shiny_red_cobra's idea doesn't help you i advise to send an email to Logitech's customer support.