Powerbook G4 - potential logic board failure

Pingu UK · #1 March 7th, 2009, 05:16 PM

Hi everyone.

Background: Late 2007, my Powerbook G4 (Aluminium) ceased to function properly (booting it up resulted in a blank screen followed by three beeps and simultaneous flashing). A failed logic board was the culprit. Thankfully it was under the final year of its extended warranty. If it had not of been, I would have faced paying a hefty sum of approximately £600, though I’m sure the cost of repair was more, perhaps £800.

A few days ago, the same thing happened again. Now it is out of warranty. The laptop is a little more than 4 years old. I do not know for certain that the problem is logic board related, but, given the potential cost of diagnosis and repair on top of the laptop’s age, I cannot see the justification in repairing it.

Other than recover what I can from the Hard Drive, I’m at a loss as to what to do with it now. All suggestions are welcome. I’d rather not have to attempt a ‘DIY’ repair job on it though.

Apologies if I have posted this in the wrong thread.

Thanks in advance.

DeltaMac · #2 March 7th, 2009, 05:46 PM

Three beeps means that no RAM banks passed memory testing.

If a RAM card is installed in the upper expansion slot (if not, skip to next step), remove it and restart.
• If symptom does not repeat, replace RAM card.
• If symptom repeats, replace RAM in lower RAM slot with known-good and
compatible RAM card and restart. If symptom repeats, the logic board is bad.

If a RAM card is not installed in the upper expansion slot, replace RAM in lower RAM slot with known-good and compatible RAM card and restart.
• If symptom repeats, your logic board is bad.

That's pretty much all you can do.

Pingu UK · #3 March 9th, 2009, 05:42 AM

Thanks DeltaMac,

Everything is running as normal. Oddly, all it took was for me to remove the sole RAM card from the lower slot, and put it back in again. Not sure what to make of that.

If you think it's well advised, I will now buy a second RAM card for the upper expansion slot to back-up the first.

Thanks again for your help.

Regards, Pingu.

DeltaMac · #4 March 9th, 2009, 08:13 AM

Some PowerBook G4s had problems with the memory slots, and that may have been the reason for your first repair. If that was completed by Apple, and you have a failure again, then Apple MIGHT offer to repair again, even if you are now out of warranty.

No guarantee on that actually happening, but if you have that problem again, you should call AppleCare, and tell them about your problem. You can also contact Apple's customer support (different from AppleCare)

Pingu UK · #5 March 10th, 2009, 09:51 AM

I think you're right about the memory slot. The laptop has been working on and off lately.

Received a new RAM card today - both the new and old work in the upper slot, but neither works in the lower slot. Costly to repair? Might be too optimistic to think Apple will repair it for free.

Pingu UK · #6 March 10th, 2009, 09:54 AM

Found this: maybe Apple will help?

http://www.macnn.com/articles/07/05/....failure.woes/

ora · #7 March 10th, 2009, 09:55 AM

Hmmn, have you looked in the slot. A bit of careful cleaning with a can of compressed air may help if its a bit of dust in the slot, maybe worth a go.

Just use short bursts and ALWAYS keep the can right side up or you risk spraying propellant into the machine. Oh and the standard "always backup first" advice applies

Pingu UK · #8 March 10th, 2009, 10:08 AM

Tried that, thanks for the suggestion though.

To be honest, unless Apple will do it for free, I'm not overly concerned about repairing the lower slot, especially if it's costly to do so.

The Following User Says Thank You to DeltaMac For This Useful Post:
Pingu UK (March 9th, 2009)

The Following User Says Thank You to ora For This Useful Post:
Pingu UK (March 10th, 2009)