How to fix your broken G4 ibook motherboard
Posted 1 month, 2 weeks ago at 10:16 pm. 13 comments
G4 ibook motherboard fault.
Apparently there is a problem with some G4 ibooks. It can appear after a year or so in some machines. After being on for a few minutes, they get a blank black screen, the fan turns on, and the computer freezes. This article describes the problem and how to fix it.
What models are afffected?
You might be wondering if your ibook is affected. Here is my guess, if your ibook has built in airport extreme, (which is the case for all ibooks after October 19, 2004) you should be OK!
The original 2003 ibook G4’s (800/933/1Ghz) have the fault. This is the model I have. The “Early 2004″ (1Ghz) models up until Oct 2004 probably have the same motherboard.
The good news, the 60G (1.2Ghz) “Early 2004″ model and all the “Late 2004″ model ibooks (1.2Ghz/1.33Ghz) and Mid 2005 (1.33 and 1.42Ghz) have built in airport extreme, which means a different motherboard.
SUMMARY: Suspected models are M9164LL/A M9388LL/A M9165LL/A M9426LL/A M9418LL/A
IT APPEARS FROM THE COMMENTS THAT THE ABOVE INFORMATION IS WRONG. It appears even models with the new motherboards are affected. I have started a survey here click to see it of the affected models.
What is the fault?
The Danish Consumer Complaints Board did some investigations and confirmed the fault. There is a really good report in the form of a pdf document with close up pictures of the fault here:
www.forbrug.dk/fileadmin/Filer/PDF/ENGF959-orig.pdf
Here is a photo from the paper. You can see the thin black line below the lead which is a crack in the solder.
My ibook is indeed just as the article describes it. The little chip gets hot, and if I press my finger on the chip, it works! Take my finger off, it stops working!
I rang Apple Australia and they don’t acknowledge that the problem exists. They have officially ‘never heard of it’.
The repair:
You need to grab a fine tipped soldering iron and heat up the top few pins of the chip one by one to resolder it to the logic board. Press the chip down while you apply a very clean and fine soldering iron tip to each pin.
This is a very complicated ‘how to’ a bit outside the scope of this site but may be interesting to some. Don’t attempt this one unless you have had lots of soldering experience!
Here are some pictures:
The G4 ibook with the bottom case off. The offending chip is circled.
Here is a closeup of where I have soldered the legs of the chip. You can see the base of the top pins are shinier from the new soldering. I soldered the top 3 or 4 pins on each side, but it’s only the top 2 pins that the fault occurs with as they are the main power pins. I applied a little more solder to the joint as well, that’s why it looks a bit lumpy.
Here’s an alternate crude DIY repair method:
http://johnbakersblog.co.uk/design-fault-in-apples-ibook-g4/
another DIY solution is here:
http://coreyarnold.org/ibook/?p=20
There’s some good discussion on the apple pages here:
My ibook is the late 2004 model… no apparent problems.
Am I safe?
Yes looks like you are!
hi ,. my ibook has the same problem but i think the model of the motherboard is not the same like hte picture you put .
i have the ibook g4 1.33 with combo drive ,…. i not have the airport on the same place of memory slots.
can you help me telling me the airport chip model name ?
thanks ,.
Hey!
I have an iBook G4 1.42Ghz (2005). I have to say I have exactly that problem. I pushed down the left side besides the trackpad with my hand and it turned on. Before I couldnt, and I always had the grey screen with the Kernel Panic message on it.. So I guess not only early iBooks have that problem.. so nobody who has an iBook is safe.. sorry to say that guys but it just happened to me…
I got my 14″ G4 ibook 1.07 ghz on ebay. Quite soon after I got it the ibook started to freeze with coloured horizonal lines slowly taking over the screen. This began to happen sooner and sooner after starting up the ibook. If I clamped it to the left of the trackpad it ran ok.
This article gave me courage so I removed the bottom case and heat shield (following the brilliant ifixit.com instructions) and found a couple of rubber pads on the graphic chip (clearly, it had had the easy repair already).
I have unsteady hands but fools rush in so they say, so I bought a 25w Antex soldering iron and a 2.5mm tip. I primed the tip with a spot of solder to get some flux on it and held the tip against the legs of the chip for 2 and a bit secs, attacking only the top3 on each side. The soldering iron did about 2 at a time as they are tiny.
The ibook has run perfectly all day, playing movies etc. I’ll keep you posted.
Thanks for everything.
You’re a legend Will, good on you! Yes, be sure to keep us updated on how it goes. Mine is still alive and kicking 2 months on.
Wayne
I have one from work apple diagnosed with “Faulty board” Same deal. Push to the Left of the track pad she fires up. Its a 1.33 ghz w airport card and combo drive i think. Not sure of the year. I am going to pull the case off tonight and see if I can see a bad solder joint at the places you mentioned on that IC. If I see some I will hit it with a soldering iron and I will let you know how it goes.
If you are soldering it, you don’t really need to apply solder to the joint. Like Will said, you just put some solder on the iron to clean it, but even then, make sure you blow or shake off the excess. The worst thing is if you actually apply some solder to the chip, and the two leads short out. This happened to me and it was quite hard to get it out again.
I have had a iBOOK G4 for 4 years and for the last couple of days it has been freezing 5 mins into starting up,i dont get a black screen but i cant move the mouse and if i am playing music that will also freeze on the same point,what do you thing the problem is? my iBOOK will always start up but sometimes i can see the apple symbol but will then not load my desktop,if i leave it over night the problem seems to go away,but again 5-10 minutes in and it stops working,is the problem related to the chip spoken off already,i need some help.Thanx
I meant to get back to you guys but forgot the url. Bookmarked now. I let my iron get uber hot and just lightly tinned the tip and applied to iron for about 10 seconds if that long to the two pins you identified. I am happy to say its running nicely daily since and I just put osx10.5 on it. Apple wanted 800 for a new logic board installed. Thanks much for your help the only thing I would suggest is linking to the ifixit chassis removal page for removing the chassis. http://www.ifixit.com/Guide/Mac/iBook-G4-14-Inch/Lower-Case/84/5/
I gotta say it was a great help too i think its awesome they put manauls accesable like that.
PS apple are a bunch of nasty names and they should pay for these motherboard replacements for their crap engineering or bad QA on the solder joints.
to those who have a 1.33ghz or 1.42ghz ibook g4:
Your problems may not be related to the graphics card. A number of users seem to be having problems related to the AirPort Extreme module that will either boot the laptop into Open Firmware and stop it from booting into osx with the blinking system folder error, or will kernel panic.
Take it apart and try removing the AirPort Extreme module (it’s a small grey coloured thing held in by 3 screws and has two wires going to it. just left of where the Radeon chip is, at the bottom end of the heatsink) and see if it starts.
THIS PERSONS A GENIUS, YES THE PROBLEM EXISTED AND IS NOW RESOLVED. LOCAL APPLE DEALER WANTED 100 POUNDS TO DIAGNOSE PROBLEM, AND POSSIBLY MORE FOR A HARDWARE REPAIR. AT LEAST THERE ARE SOME PEOPLE IN THIS WOLD WHO ARE GENUINE! CANT THANK YOU ENOUGH FOR THIS WEBSITE!!!!
Many thanks for this fix. Despite the precedent set in Denmark http://mediamac.comon.dk/index.php/news/show/id=17805, Apple Customer Relations will not admit to this basic design fault and offer no support other than the fully unacceptable cost of a logic board replacement as an out of warranty repair. Had it not been for this forum I would probably have had to buy what is now, for me, another suspect Apple laptop product. As it is the machine now works perfectly - indeed the wake up from sleep function now works which it had not done since the warrantied logic board replacement 2 years ago.
Thanks again.