I've got a yo-yo power supply for my powerbook, and i recently noticed that its producing a 60 cycle hum when its plugged into the powerbook (under a load). I was wondering if that is normal, or is that the beginnings of it dying like ive read. and why didnt apple recall them if there so problamatic? Thanks!
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They probably didn't want to recall them because they normally fare pretty well, and they already had to recall lots of Powerbook G3 power supplies. The way to keep your yo-yo working is to always unroll the cable completely, or else it could overheat. There are some replacement power supplies out there, but I don't know how well they work.