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  1. M

    TiBook G4 Troubleshooting

    Got a Titanium PowerBook G4 (A1025) that has issues. Symptoms: Turning it on results in a Beep, then the led comes on, then flashes twice, then steady for a little while (couple of seconds), then flashes twice again. keeps doing that until you turn it off. No display. No picture or...
  2. M

    Blackbird & Yosemite

    Picked up a 520 last week, and a B&W G3 tower this week. My work is having its annual, "dump your old computer gear at the IT department for disposal" event. Also got some hard drives SD ram and a couple of P4's so I can retire my P3's. Someone had raided the video card and ram out of the...
  3. M

    Powerbook 520 power pinouts

    Hi I rescued a 520 from the scrap pile at work yesterday, but I couldn't find the power adapter. I found an apple pdf that says it takes 16 volts, but I need to know which pins are positive and which pins are ground. Looking at socket there are 4 pins in a square configuration eg: . . . ...
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