PowerPC :: Lines Across Screen - Logic Board Failure
Mar 18, 2009
First Mac Attack, must say I like working on these things, I'm working on a friends late 2004 ibook g4 that seems to boot up fine, but with lines across screen exactly like this one found in google images. Most of the info I've come across seems to point to a logic board failure, but also have seen posts relating to LCD failure. wondering if any here have encountered this and what eventually found was problem. This ibook is litterally on the verge of just being replaced anyway. I'm only working on it because It's a first, and believe the education is valuable.
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Jan 15, 2008
I was just wondering if anyone could help me with this. the iBook that I just inherited from my aunt, (She got a new MB) was working yesterday, whenever the power shut-off on it. (It has a power issue on the logic board, and if it comes unplugged it dies, even though it has a new battery.) so she went to work, and attempted to power it on, it came up, and the apple was on the screen, and the spinner came up, nad it spun for a very long time, eventually the screen flashed, and turned blue, and the spinner came again. After around 15 minutes, she was given the kernal panic screen. She held down the power button, and restarted, only to come up with the old finder face, and a question mark. I rush over with my disc's, and load up the disk utility. It was repairing the disk, and about 3/4 of the way through, it had an error. So, I rebooted, and we got an apple, and it repeated the previous situation, and gave the blue screen, followed by a kernel panic. This time I ran the hardware test, and it says that the logic board passed, but there was an issued with the harddrive.
At first disk utility could find the hard drive, and it reported it as being a 2 TB drive!!!!!!! So I got suspicous about that, and after the hardware test, the computer was reporting that there was no hard drive in the computer at all. we know for a fact that the drive was either 50, or 80Gb's, (90% sure 80) My question to you is: Is this the hard drive that has gone bad, or, is it the controller on the logicboard needing to be replaced?
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Oct 4, 2009
OK, so I did something truly stupid. I managed to splash water on my macbook. I hit a small cup of water (about 2 oz) with the end of the computer with the CD drive. It immediately shut off. The next day, I set it outside to dry in the sun and by midday, all was well. It functioned just as it always had. This continued through last night. This morning, when powering on, all I got was a white screen (no tone). After doing powering up while holding command-alt-r-t (a sequence I found on a help board), it will now make the tone, but maintains the white screen. I am slowly accepting that I am an idiot and the computer is probably a loss. Multiple internet searches have suggested it is either the logic board or the hard drive (at the very least). Any ideas?
My dad is a computer programmer, but does not use macs. He looked at it and just shook his head. I am very non-computer savvy (I know how to turn it on). He did say if it is the logic board I should be able to retrieve all of my (non backed up) files on the hard drive. He said he really doesn't think that it is the hard drive.I also am learning that it will probably be cheaper to replace than to repair. However, I am willing to try anything which might help.
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Dec 24, 2006
I had a fault where my powerbook would not start up. Apple replaced the logic board and now the screen is a very strange colour and flickers.In the video I use the hot corner and the dog changes to the right colour but the windows do not. its very strange.I will have to take it back to apple in the new year but is there anything I can do to improve the image. Its so hard to look at like this.
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Aug 14, 2010
2008 mac-book pro, started having these warning screens come up by which it states that i have to turn off/ restart ( only option as no other controls work). These became more frequent until yesterday i turned it off as per warning to then restart but now it wont turn on at all.
All that happens now is that when press the power button the fans come on for about 5-10 seconds and then it just all abruptly turns off, the screen stays blank and there is also no start up sound either.
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Oct 31, 2006
I purchased a 1.33 G4 14 inch ibook exactly 13 months and eight days ago. The logic board is toast as of today. i.e. flashing colors and flickering screen. I took it back to where I purchased it and many other apple items {powermacpac it Portland Oregon}...and I was told that it was a $600 dollar repair...unbeleivable...I now have a $1050 dollar paperweight. I called apple support to find out if they would fix the computer since we were so close to the warranty end date. n the end...I shoulda bought applecare.
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May 8, 2008
I'm looking to get this titanium powerbook but it has a broken screen, possibly bad backlight? I can get it for a good price and I would love to have it to replace my ibook. I don't know the specs for sure but I am positive I think it's the DVI version since it has the keyboard that looks like the ibooks(same placement for the keyboard release latches).The guy said it worked fine on an external monitor but just recently he said it won't boot now and it now makes a high-pitched whining sound. Anyone know what that is? I'd like to use it as a headless mac until I locate a new screen for it.
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Feb 27, 2009
My primary MacBook is suddenly now powering up - Tried the power management reset....removing battery/power and attempting restart after 12 hours and so forth. Does this sound like Logic board? Is there a chance the HD data can be retrieved if it would be installed in another MacBook or...if Logic board is repaired?
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Nov 7, 2009
i need some advice on what to do next, my Intel 24" iMac has failed, diagnosed as a faulty logic board by the Apple Genius. I purchased the iMac in Dec 07, and I deliberately did not purchase the extended warranty as this is a desktop unit, that in 20 months of ownership has never been moved, dropped or transported anywhere.
I have no option than to either pay for the repair - �380 or sell on eBay for spares...!
I informed Apple about the Sale of Goods Act, and they have put the owness on me to prove it was faulty from date of purchase...! They have informed me that I need to visit an Apple authorised service centre where they will run a test and produce a report, which will determine if the fault was there in the first 6 months of ownership.
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Oct 4, 2009
I got a late 2008 MBP and recently my logic board got exchanged due to my graphic card failure. However, since the work is done, a very annoying problem occurred. When I put my hand on my palm rest (right side, the hard ware side), it sounds like I am squeezing the whole thing down and it will make some very wired noises. It sounds like cracking or sth. I bring it in apple store twice and they said they do not hear anything. Anybody have a idea about this issue? Thank you very much.
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Nov 5, 2009
My iMac G5 is basically dead. Logic board failure. Apple is going to replace it by giving me a credit toward the purchase of a new iMac but that is a different story. I need to send my G5 back to them. Can I take the internal hard drive out and transfer the data to a PC and then get that data off the PC onto an external HD?
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Feb 8, 2010
Laptop suffered wine spillage, now it won't boot up. Cleaned the logic board (+ gpu/cpu/heatsink) with isopropanol, rinsed with electronics cleaner (electrosolve), but still won't boot. There are some visible signs of oxidation, very very slight. Magsafe connector works, ac adapter light only comes on when connector is connected to motherboard. Also the motherboard gets slightly warm to touch when power is plugged in. When ac plugged in, the macbook won't start up. Couple of questions:
1) Anyone have a diagram of the a1181 logic board? (2.0ghz, core duo)
2) Anyone know how which pins to short on the keyboard connector to power up (in case the keyboard is the problem); remember reading it was the farthest left pins, can someone confirm?
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May 13, 2008
so i've got a system with a fried c2d board. i can pick up a cd board for $150 plus shipping which is good for me. to find a comparable replacement, i'm looking at ~350 and i'm just not feelin that price as im on a budget.
i'm not concerned about the speed decrease as im just trying to get this thing rebuilt.
i understand that there are different heatsink assemblys..vertical vs horizontal. however, i do not know how to tell the difference and i am also unsure whether or not my c2d heatsink will work on this board i receive.
the logicboard possess a t7300 c2d and model # is 820-2279-a, it appears.
i cant find anything on that model, except for on ebay.
and i totally cant find the serial number on this macbook. under the battery on the tray has no serial number listed, and i've read through this documentation [URL]
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Sep 19, 2010
Would it be possible to get a logic board with a 1.33ghz or faster processor out of a 12.1" G4 and swap it in to a G3? Are the parts even compatible? I know from building engines that certain years and parts are interchangable but I don't know about computers.
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Jan 6, 2011
thread or youtube walkthrough for removing a G4 MDD dual 867 logic board? (including how to remove the CPU daughter card).I have the heat sink off and all my RAM and PCI cards out,.
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Oct 23, 2007
I'm looking fore some help/opinions on a friends iBook G3 800/30GB/256MB/10.2.8the problem is- when you press the power button, it powers on and you hear the (all is ok) chime. now sometimes it will boot perfectly fine and others you get nothing, just a blank screen.Now i know these things were notorious for logic board failure, but could this just simply be the HD, and if it is, how easy is it to change.
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Feb 29, 2008
How do I fix it? I assume the Repair program is expired, so how would I go about fixing it myself?
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Mar 6, 2008
I'm still working on this deal to buy a used 12" PB. The seller says that she just replaced the logic board, hard drive, and battery. Now, I see this as a negative. Obviously the computer was having problems, she spent a bunch of money fixing it, and is now selling it anyway. What do you think? Is it a negative that it had problems and needed to be fixed? Or is it a positive that it has a brand new logic board that will theoretically last longer than an original one?
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Jul 6, 2008
I bought my first Mac (iBook) last December. However, it is now dead from logic board failure. I was looking at Macbooks but they are very expensive, which is why I bought the iBook in the first place. So now I'm looking at 15" PowerBook G4. My question is: If having a G4 proves too difficult in the next few years (PowerPC compatibility and speed), could I put a logic board from a 15" MBP in the PB?
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Jul 30, 2008
I am thinking about purchasing this PowerBook and getting it fixed or reselling it. What do you think?
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Jun 26, 2009
As the title implies, I've got 3 year old G5 iMac sitting as a paperweight at my desk. At least half that time ago the logic board died and I was quoted a repair bill of around $900. I couldn't go with it, but I couldn't decide what to do with it either. I now have to get rid of it and since I know that this model had lots of issues with logic boards I'm hoping some of you will have some good advice.
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Oct 3, 2006
I am looking for a motherboard and possibly processor for a MDD g4 powermac. I need the 167mhz version, rev with dual firewire 400 ports. Also, possibly a dual 1.25ghz processor module. I have either a dead processor or motherboard in this machine and I am having trouble finding some used replacement parts.
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Oct 29, 2006
I've got a 900mhz G3 iBook that my wife uses. The logic board was replaced on it once already. It's really starting to act up again. I see Apple is still honoring their Logic Board switch out. What are the chances they'll upgrade it to a G4 or a macbook ? Has any recently sent there iBook in for a logic board replacement? How'd it go, how long did it take?
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Apr 6, 2007
Can you put a 800Mhz g3 logic board in 700Mhz g3? I read somewhere that I will have grounding issues. Is that true? Has anyone done this? My ibook has been sitting here unused for the last 4 months and I would like to see if I could get it working. (The video chip has died and I have tried to get it back)
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Jul 11, 2007
my G3 iBook's logic board has died (it was in that series that had the logic board problem). I had it replaced once already when it was under warrenty. However, the second one has died and Apple will not touch it (unless I pay something like $350 for Apple to fix it). Well, I decided to take matters into my own hands and I ripped open my iBook piece by piece. Now that I have the logic board in front of me, what can I do to fix it? Can I sodder something? Should I take it out and buy a new one off ebay?
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Mar 3, 2008
My 17 inch iMac G5 1.8ghz seems to have died. For a while it's been refusing to power up and then powering up randomly but now it wont power up at all. I've looked on the logic board and reset the SMU etc but I can only get the first LED to light up. I think this means the logic board has died. Is it worth replacing the logic board and can it be done easily myself? Or should I just bite the bullet and pay out for a new alu intel iMac? I'm in the UK btw, any ideas on logic board prices?
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Mar 27, 2008
I'm obviously new with Power Mac G5. I have two different logic boards for a Power Mac G5. The EEE code and part numbers are as follows:
Logic Board 1:
EEE Code: SML
Part Num: 661-3585
Other Num: 630T6907 (I don't know what this number signifies)
Logic Board 2:
EEE Code: SMJ
Part Num: 661-3584
Other Num: 630T6906 (Again, I don't know what this number is for)
My question is this; what configurations can I use these boards as replacements in? I'm looking at 3 PowerMacs right now but none have matching EEE codes. I listed the EEE codes and the type of machine they are below.
PowerMac 1:
EEE code: Q5M
Single 1.8GHz G5, 1GB Ram
Power Mac 2:
EEE code: ROR
Dual 2.5GHz G5, 1GB Ram
Power Mac 3:
EEE code: Q6E
Dual 2.0 GHz G5, 4GB Ram, Bought in late 2003
So, if it is impossible to use these logic boards as replacements in any of the above mentioned systems, which systems are they actually good for? I understand there may be system bus speed differences for one. But is there some sort of reference for these EEE codes such as a table or chart? Or possibly a compatibility list or description table with features for each board?
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Sep 29, 2008
I have an emac, g4 with a bad logic board. Does anyone have any idea what it would take to replace this and the estimated cost?
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Jan 8, 2009
I picked up a 12" PB for 160 USD today. It had a bad battery and noisy and seemingly non functional optical drive, stock configuration. Looked like someone tried to open it up and failed to put back one of the hinge screws. I believe this is causing a green line (crimp in the video cable) on the screen. My question is: I have never replaced the optical drive on one of these. I bought this for a friend whose ibook died and he has a nearly brand new dual layer ATA superdrive in it that I can replace into the Powerbook. I knew this was daunting. Then I really just looked at the ifixit steps and yeah, you have to dismantle the WHOLE computer. There are 46 steps to replace the optical drive. Has anyone attempted this? I don't understand why you have to take out the logic board to get the optical drive out? On the upside, the near dead battery is eligible for the replacement program, so Apple is sending a new 125 dollar battery. Sorry I am rambling, just freaked at how much work it is to put a new optical drive in these things. Major surgery. someone on MR said they did it before.
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Nov 11, 2009
I brought my powermac into the apple store to confirm what I already thought - the logic board on my g5 is done.I'm putting it up on CL with full disclosure, but I was wondering what I should ask for it? Here are the specs, what would you pay?
powermac dual 1.8 g5
2gb ram (512x4)
80gb HDD
ATI Radeon 9800 XT 256mb
superdrive
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