Can I replace the power module in my iMac G4 17" Flat Screen computer?

My iMac G4 17" Flat Screen will no longer power up. It has been getting slower and slower the longer it was running until finally I have no power at all.
Can I replace the power module, where do I get one, how much do they cost and how big a job is it to swap it out?
Any help, or information that you can give me will be greatly appreciated.

Can I replace the power module, where do I get one, how much do they cost and how big a job is it to swap it out?
To repair your iMac G4 17" Model you can go to iFixit

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