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TiBook G4 Troubleshooting
Posted by: mr camouflage on 2008-12-16 07:12:58 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 backlights. CD drive makes a noise when you turn it on. Hard drive spins up. It charges the battery (plug glows orange, battery charge leds show charge). Anyone know what the 2 flashes means? Is there an apple doc for troubleshooting this mac? I cant seem to find anything relating to the flashing led code. I'd love to get tis mac working again.
Posted by: Leografix on 2008-12-16 08:35:47 A single beep -> could <- mean a wrong or not well seated RAM module. Regarding the screen flashing: try to connect an external display and see what happens. J
Posted by: Christopher on 2008-12-16 08:43:37 Yeah thats the ram beeping. My PowerMac G4 did that when I didn't seat ram correctly.
Posted by: mr camouflage on 2008-12-16 08:53:27 The screen doesn't flash, the white led under the screen does. I think you are right about the memory. I found that 1 beep = memory problem, but I don't think its the actual memory. I tried 2 different known good sticks in each slot, and it still wouldn't boot. I think there must be a problem with the logic board. Ah well, that sucks. Edit: 1 beep = no ram. It thinks there is no ram installed. http://support.apple.com/kb/HT1547 "in addition to the beeps, on some computers the power LED will flash a corresponding number of times plus one. The LED will repeat the sequence after approximately a 5-second pause. The tones are only played once." Which is why the led flashes twice.
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