TiBook G4 Troubleshooting

[mr camouflage]

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.

 

[Leografix]

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

 

[Christopher]

Yeah thats the ram beeping. My PowerMac G4 did that when I didn't seat ram correctly.

 

[mr camouflage]

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.