Why are my speakers making a strange signal burst sound?
I dissasembled a PowerBook G4 accordig to your instructions because the display was bad. I replaced the display. I reassembled the PowerBook, but now I get a strange signal burst-type sound that is very rapid. It comes out of the right speaker. I've moved the laptop (to make sure it wasn't near any devices that would cause the problem). The only way I know to fix it is to unplug the speakers from the motherboard. The weird thing is that it didn't make the sound for hours after I assembled the machine. Now the sound starts as soon as I press the power button, then stops and then starts again after boot up. Any ideas?