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A1001 PowerBook G4 Titanium DVI startup/power problems
Posted by: joshc on 2023-06-26 21:51:28
Is anyone here familiar with these? Having a few issues with one that won't power up.

Some details about the problem:

  1. I am using the correct 45W adapter.
  2. The green ring light appears; this remains solid IF the battery is not connected.
  3. If the battery is connected, the ring light goes amber but then goes out after a few seconds, then no light at all.
  4. If I try to power on with the battery removed, when green light is present, the fans start and the optical drive tries to initialise for about 1 second, and then power stops.
  5. If I try to power on with the battery connected, while the amber light is still on for that few seconds, the behaviour is as per point 4 above.
  6. If I try to power on after the ring light has gone off, nothing happens at all.
Things I have already tried:
  • I have disconnected the PRAM battery.
  • I have reset PMU.
  • I have inspected the DC-in board; it visually looks OK but otherwise I cannot tell if something may be up with it.
  • I have tried leaving it plugged in to try and give the battery some charge - but the ring light goes off when I do this, so I am not sure its doing anything anyway.
Things I have not tried yet as I'd be surprised if they are the cause
  • Powering up with the optical drive disconnected.
  • Disconnecting the Airport card and keyboard and seeing if it powers up without those.
Any ideas what to try next? I can source a known working DC-in board fairly cheaply. It seems odd that the machine won't power up even with battery removed and power connected with that green ring light.
Posted by: joshc on 2023-06-27 00:47:07
I have tried powering up with the following disconnected, no change in behaviour: optical drive, hard drive, Airport card, keyboard.
Posted by: MacUp72 on 2023-06-27 10:00:46
maybe a bad DC-in board?
I have a 800Mhz Ti that get a bit hot on my lap, maybe thats normal for those..
Posted by: 3lectr1cPPC on 2023-06-28 11:47:59
Yeah my 667MHz TiBook gets pretty darn hot, probably needs thermal paste changed. Sounds like you have a dead logic board or a bad dc board.
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