My g4 got dropped and is now silent but still working. i changed the sound card but still no sound. have noticed damaged capacitor near the max 1717 chip. what is this chips function, what is this caps value
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Re: apple g4 aluminium
What sound card are you using? It has to be external for you to switch it. When a computer is dropped, the hard drive and logicboard are under severe danger. The drive is constantly spinning anywhere between 4200 and 10k rpms. If the logicboard endures any shock there could be endless possibilities to failures in addition to them being intermitten. Can you specify which G4 you have, in processor speed and machine/display size? And I take it when you mean " no sound", you also mean no Apple start-up chime when you boot the machine?
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What I would suggest is reseating the airport card as it may be the card has come loose or the cable is not connected properly. The following support page on the apple website will tell you how to do it.
It might be giving notice, it might have some loose screws, but then again, it might just need some oiling.
There's probably a sticker on the rear side of the fan (where the power wires come out), remove it, underneath you'll see an aluminium cover near the center. Take this cover off with a pointed knife or similar, it should come off with just a slight force and you should now see the axis fixed in place by a clamp.
You just need to put a drop or so of oil, just make sure it reaches underneath the clamp into the bearing/bushing and if the bearing/bushing was just a bit dry or dirty and if it's not really damaged then the fan shoud now run quietly.
Put the aluminium cover and the sticker back in place, try it out, if it's silent, you win, if it's still giving notice then it should most probably be replaced.