How do I change the clock battery? What's the required model?

When I start the PWRBK, there's a tone, then tap-tap tones (like a not charging condensator) then the system starts.

I must start the PWRBK with cmd+ctrl+shift keys then it starts without extensions.

Thank you!

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This machine has no PRAM battery. Please refer to my former question on this: PB G4 Aluminum 12" does not have PRAM Battery?

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Thanks, mayer! Now I see that the capacitor is probably failing…


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btriponez will be eternally grateful.
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