1 Reply Latest reply: Feb 8, 2013 4:34 AM by bookpower
bookpower Level 1 Level 1 (5 points)

I got a PowerBook G4 17" 1,5 GHz last week.

I installed a SSD. Super fast, cool and silent.

 

Now I mention a silent zzzzshshhshhhpffffpfffzzzz noise when the power adapter is pluged in.

 

I can hear this noise when the PB is turned off with or without inserted battery.

 

On startup it dissappears and appears again when the OS has booted.

 

I could swear that this noise wasn't before. Its very silent, but I can hear it.

If you reduce the brighness there is another silent noise too.

 

The hardware check don't found anything.

 

Did you hear such noise on your PowerBooks

The DC-IN board?

 

Please help

  • bookpower Level 1 Level 1 (5 points)

    So, I opened it and disconected as much parts I could.

    No Speakers, no soundcard, no harddrive, no fans, no bluetooth, no memory.

     

    This chirping noise comes from the logicboard! As soon as I plug in the power cord it is there.

    (The PowerBook is turned off)

     

    Are all PowerBooks (17") producing this electronic chirping noise?