Question broken 1.8 volt supply

[botfixer]

Hello, I have a Wii where the 1.8 volt supply is defective. The rt9009 regulator does not seem to be available anywhere and I have not found anything comparable.
Do you have any ideas how I can generate the 1.8 volts so that I can fix that Wii?

 

[botfixer]

now i have done something like this:


That brings back 1,8 Volt to my Wii and everything is fine. It´s a cheap step-down converter which is powered with 12 volt input voltage.
The 3.3 Voltage is used as switch on sense. So when 3,3 Volt is come up, the converter switch on 1.8 volt supply.