Can't boot Ti book 500. Bad logic board?

Hi people. I have read everything about this on the web, but the only problem I found that was identical to mine was solved replacing the motherboard.
This is a 500 mhz ti book. One 256 mb stick and one 512. 20 gb hd. I have tryed 3 different os installs. 9.2, x.3 and x.4. They all freeze at boot. In os x, after the gray screen with the apple logo, comes a blue one and stays there. In os 9, when loading extensions. If I boot in os 9 with extensions off, it does boot, as well as from the os 9 cd using a firewire cdrom (internal is not working). If I start in target disk mode, my g5 does not sees the powerbook in system profiler but the drives dont show up in disk utility.
I have tryed PMU, swaping ram, unpluging the hd and booting from a firewire drive. I dont have the apple hardware test for this machine, but im suspicious about the logic board. When I boot it in single user mode, it freezes and the last line says Firewire (OHCI) Apple ID 18 built-in: No valid selfIDs for more than 2 minutes after bus reset.
If anybody know what else could I try or has a Hardware test cd that we could arrange a transfer (I undestand Its free from any apple dealer but here in argentina they dont even know what it is).
Thanks in advance for any help.
Pepo

Thanks eww.
I have booted from os 9 and deleted the ati drivers of the X.4 system folder. Now it boots and Im typing on it. I didnt run a dvd yet since I did a very basic intall, but at least the genie effect works. I understand that the cpu takes the graphic tasks when the video card cant handle, so I suppose I should expect poor performance...
But still, I wanted this machine to run pro tools in os 9, so I think I will do fine, and have x.4 for internet. I just need to test a bit more so that I dont miss a live recording thanks to the weird motherboard.
Also, the screen doesnt look very good without the drivers and it cant be adjusted in any way.
Will update if I find anything new.
Pepo

Similar Messages

Can't boot G5, bad logic board?

G5 Dual 2.0 Ghz, 4 GB Ram
Can't get past blue screen unless I boot in safe mode, then I can get in.
Here's what I've tried:
5 different boot volumes, including Tiger and Leopard and a clean install
internal drives only, external drives only
reseated ram
zapped pram
zapped nvram
reset pmu
booted in single user mode, gets stuck at workaround bonjour unknown error 0
pulled out airport card, reseated airport card
tried just about everything, always stops at the blue screen with cursor
does this sound like a bad logic board or is there anything else I can try? thanks

Dear Mr. Jarrett,
Just analyzing: You're not able to boot normally from any installed system on any hard disk, but you can boot in the single user mode, are able to use AHT and the G5 even boots from the TechTool disk.
However, you do not state you installed those five systems mentioned recently, so the question is: How stable is your computer booted from a DVD (grey install disk or the TechTool bootable disk and are you able to do a fresh system install now?
I don't think your RAM chips are bad, but there could be a problem with (one of) the SATA cables connecting the hard drive to the logic board. Did you try both data cables (by using the second drive bay)? As you undoubtedly know a PowerMac cannot boot from an external USB drive, but having a bad internal data cable could also prevent starting up from a FireWire drive. And take a critical look at the four guide screws: are they well fitted?
From your description I understand you own a dual processor and not the late 2005 duo core G5. These computers are very different animals indeed.
Success and best regards,
Robbert
Message was edited by: Mechanic man
Message was edited by: Mechanic man

How can you transfer files from an iMac with a bad logic board?

This is in reference to my "Nothing but a blue screen at startup!" post. He took his iMac to an Apple authorized repair shop and he was told that the logic board was shot. He has decided to get a new iMac but he's wondering about all the photos and other files he has on the old hard drive. What are the ways that he can get files from the old hard drive on to his new one when he gets it? Thanks in advance for your help with this!
Eric

Hi Eric!
roam's method is a very good one!
I don't know if this will work because of the bad Logic Board, but another way, may be to use Firewire Target Disk Mode.
The ailing iMac would have to be Firewire enabled, and you would need access to another Firewire Mac.
Good Luck!
ali b

Power Mac G5 DP1.8GHz - Bad Logic Board or Power Management Issue?

I have a Power Mac G5 DP1.8GHz/1.5GB/80GB which I bought non-working. It has not yet been disassembled or examined by a certified tech. This is it's issue (which replicates): the computer powers on. It makes a single warning tone, then the LED flashed at least 15 times (too fast to count). Then the posting chord is heard. Hard drive spins up. Then nothing (no video). Won’t boot from any disk. I have changed the RAM and tested the RAM banks with known-to-be-good RAM from another DP1.8GHz G5. The warning tone stopped once or twice after this switch, but then it didn’t chime. I changed the PRAM battery, but not with as new one. However, after installing the used one and then resetting the PMU, it displayed video briefly for the first time. While installed in the other 1.8GHz G5, the hard drive was formatted, given a clean install of OS X 10.4.11, and then moved into this computer where is never mounts. The computer is not accessible through TDM.
Do I have a bad logic board? Bad CPUs? A power managment issue? A RAM issue?

Through my own trial and error troubleshooting, I have found the CPUs to be in good working order and the logic board passes the Apple Service Diagnostic every time. Despite the installation of numerous pairs of modules that worked in another DP1.8GHz, the computer has a RAM issue-it gives the "no good RAM" tone most of the time when it powers up (after a PMU reset it does not). Also the computer boots from disk or into Open Firmware but the disk utility can't see either hard drive so I may have a bad SATA controller.

Powerbook G4 titanium bad logic board

HELP, my second computer is a powerbook G4 15" and i have been told i have a bad logic board. is it worth replacing or should i put the $500 toward a new one? Also coould a bad logic board cause other problems in the future? what happens to make a bad logic board? what does a logic board do?
thanks for all the info.
Macbook Pro Mac OS X (10.4.9)

Hi Tour Man,
Welcome to Apple Discussions.
Which model TiBook do you have? Especially if it's one of the earlier models (400-667VGA), I would certainly not spend $500 on it, as you would probably not be able to sell the entire machine for that price.
If it's a later model (667DVI-1GHz), consider what you use it for (if you have it fixed, how long is it going to serve your needs?), the capacity of the HD, how much RAM you have, whether there's a wireless card or DVD burner, the condition of the battery, whether USB2 and the many other "updates" a new machine would offer are important to you, etc.
It's not likely that a bad LB would cause other issues.
A LB (same as "motherboard" in PC land), is a circuit board on which most of the essential elements of a PB are soldered (CPU, GPU, RAM slots, etc), so when any one of these has issues, the repair is to replace the entire LB (specialized equipment is needed to work on the micro-circuitry, so it isn't something a repair shop can repair).

Is a bad logic board due to a bad power supply?

Computer specs:
iMac G5 20", 2.0 ghz, 1 GB RAM, 250 GB hard drive
Back in October of 2008 my iMac G5 Power PC shutdown intermittently and then when I went to go to start it back up, it booted to the blue screen and hanged there forever. So, I did a hard shutdown and then waited and then booted again and it still hanged at the blue screen. I tried booting in Safe Mode, and that worked, so I had a chance to backup everything that I needed to. Then, I took the computer to my local Apple Store to speak to a "genius". They could not diagnose my computer while I was there, so they needed to take it overnight and let me know over the phone what the issue was. The next day they called to tell me that it was a Logic Board issue and that it would cost $900 to fix it. I obviously was blown away at the cost for the problem, and I could not afford that charge so I seeked out other options. I found a shop in my neighborhood that offered me a used 1.8 ghz logic board for half of what Apple was quoting me, so I went with it. Then, 9 months later (which brings us to present) my iMac completely shutdown on its own and would not start up. I ran it through some tests (LED lights on the interior) and confirmed that it was a Logic Board issue again. So, I took it back to the shop in my neighborhood and they told me that the warranty for the part they replaced had expired. So, I called Apple Customer Relations to talk to them about the issue. They confirmed, using my serial number, that I could get my issues fixed for free. They then told me about the "iMac G5 Repair Extension Program for Power Supply Issues" which was news to me. This Program ended in December of 08, meaning I would have qualified in October of 08... the time I initially brought in my computer. So, I brought my computer to the Apple Store to drop it off for repairs, and when going over the history of the machine they confirmed that because there was a used 1.8 ghz part in my machine installed from a non-authorized Apple place that they COULD NOT fix my issues now.
My question is:
Back in October of 2008 when I brought in my computer to the Apple Store and they diagnosed it with a bad Logic Board, could that have been because of a bad power supply? If that was the case, does a bad power supply cause a Logic Board to go bad?

Welcome to Apple Discussions.
The short answer is no, but it's actually more complicated than that. The original iMac G5 17 and 20 inch models were plagued by two problems: defective capacitors which affected the logic board, and an unrelated set of defective capacitors which affected the power supply. Rarely were both conditions present at the same time, but Apple decided—when they issued the repair extension authorization—that replacement of both components was a more cost effective approach. By far, the most common of the two problems involved the logic boards.
The REA covered machines for a period of three years from first sale, and ended in December of last year. Yours likely would not have been covered due to the date of sale provision. On a case by case basis, AppleCare representatives did allow coverage for machines beyond the three year limitation, but not past the end of last year.
It's not likely that you have both a defective logic board and power supply, though you may. The combination of these issues is actually found most frequently in the iMac G5 ALS models, none of which were covered by a repair extension authorization.
Your issue is a difficult one, as Apple authorized dealers and service providers have every right—and, actually, a responsibility under their annual agreements—to reject warranty, AppleCare or REA coverage for parts or labor when compatible but not similar logic boards have been placed in your machine. This is because they must exchange these parts for the part they are requesting from Apple on a like-for-like basis, and that part must be associated with your machine serial number. In trying to resolve your issue, the shop in your neighborhood actually created an additional issue for you which would only be triggered in the event of component failure. I have no idea what period of coverage they typically offer, but Apple provides for 90 days or the balance of any warranty or AppleCare extension in place at the time of the repair, whichever is greater.
Your logic board can be refurbished for $ 189.00 if it in fact exhibits the capacitor issue. That process is covered by a one-year warranty. If you are interested in exploring that option, send a message to the electronic mail address in my Public Profile and I will reply with additional information. To help determine additional information concerning your machine, please include the machine serial number if you elect to do write for more information.

Display problems, bad logic board?

Hi I'm a first timer here! I have a iBook G4 14" 1.33ghz laptop I am fixing for someone. When it boots up, the screen looks like you are watching TV with old rabbit ears. You can make out the mac logo and what not, then the screen goes blue, like the basic blue background, and it looks perfect, then once the desktop comes up, it all fuzzy again. I've replaced the LCD screen, AND the lcd cable that connects to the logic board. Same results. I guess the last part would be the logic board to replace? Does anyone have any suggestions?
Here are some links to the pictures to show you what is going on...
http://www.tylersweb.net/mac/1.jpg
http://www.tylersweb.net/mac/2.jpg
http://www.tylersweb.net/mac/3.jpg

inverter board controls brightness, the lines in your pics look more like the logic
since you have a stick of RAM, try another module or maybe remove it if you have on-board RAM
would be good to connect to the external display if the adapter is available - it would confirm bad logic board if the same lines are on the external display, it wont completely rule out the board though if there are no lines

Bad logic board VS starting as target drive!

Hello,
if someone has a bad logic board on a G5, can they boot the G5 as a target drive? witht the help of another computer? (not sure if the logic board
Michel

Hi, Michel. I suspect that whether or not Target Disk Mode works will depend on what the logic board's particular problem is. If it doesn't work, be sure to remind the user that removing the hard drive from the faulty Mac will allow her to extract any data she needs from it, by installing it in or connecting it to another Mac. In many models, removing a hard drive is easy.

Using external monitor with a bad logic board???

Can you use an external monitor on your ibook, if you have a bad logic board, to use it? Or is the only solution to use the shim, or get it fixed. Thanks.

Hi, and welcome to Apple Discussions.
If the graphics chip on the logic board has come loose, it won't drive the graphics to an external display, either. Sorry.

Will apple replace a faulty or bad logic board on my 2013 MacBook Pro?

I have a late 2013 13" macbook pro that has been diagnosed, by a non apple provider, with a bad logic board. The place where i took it suggested getting that confirmed with Apple. I have an appointment tomorrow at my local apple dealer...
but am worried that this practically new laptop is toast or going to be very costly since I don't have applecare!! Any help for me????

my late 2013 13" pro also has a bad logic board. The diag said it was a memory failure. I'm 3 months out of warranty and had it sent to the repair center for $280 plus tax. I don't feel like the logic board was defective I just didn't catch it in time. I tried a restore a few months ago and it worked better because i was in Yosemite beta since the developers beta and I thought the issues were because of the betas. It has constant panics and restarts but I was trying to get by until now it wouldn't turn on and disk utility said the hard drive was not mounted and it wouldn't let me restore It. maybe there are a few more people with problems then there should be so soon.

Can you figure out from a G4 logic board serial number what it is?

Can you figure out from a G4 logic board serial number what it is? for example if it is single or dual processor support, and the speed, i know you can check the case serial number in the apple site, but can't for the life of me figure out the logic board serial number, if any one could help identify what G4 it comes form that would be great, Can you figure out from a G4 logic board serial number what it is? KD30405K1P3UA
many thanks

Hi, Forrest!
The Chipmunk site was my first thought when I read the initial post, but although it returns a manufacturing date of the fourth week (Jan) of 2003, I'm not sure that's even accurate, since Chipmunk couldn't return any more info than that.
I wonder if an Apple Store Genius would/could look it up for him...
Regards,
Gary

Can we call default.lgf in BADI logic

Hello All,
can we call default.lgf logic script to run in the BPC in the BADI ? If yes then can someone please let me know the relevant Method or Class etc.
For e.g. we have a BADi logic that does a data push from Profit model to Main model based on some conditions. After all this processing in the BADi and writes to Main model, there is a requirement to run the default logic which is there in Profit Model. Which I want to handle in BADI itself after processing the earlier BADI.
If you need more details please let me know.
Many Thanks
Krishna

Hi Vadim,
*START_BADI RUNLOGIC_PH
QUERY = OFF
WRITE = ON
LOGIC = DEFAULT.LGF
APPSET = UUG
APP = MAIN
DEBUG = OFF
*END_BADI
DEFAULT.LGF has 2 logic scripts calling.
*account.lgf
*balance.lgf
This only executes the first LGF and ignores the second one. I executed each one at a time and all works fine but if I give both together it executes first one in the sequence and ignores the other. Any idea why it is doing like that ??
Try 1)
*START_BADI TRANSPROFITTOMAIN
QUERY = OFF
WRITE = OFF
*END_BADI
*START_BADI RUNLOGIC_PH
QUERY = OFF
WRITE = ON
LOGIC = FLOW_BALANCE.LGF
APPSET = <appset name>
APP = MAIN
DEBUG = OFF
*END_BADI
*START_BADI RUNLOGIC_PH
QUERY = OFF
WRITE = ON
LOGIC = CALCACCOUNT.LGF
APPSET = <appset name>
APP = MAIN
DEBUG = OFF
*END_BADI
it runs flow_balance.lgf and I can see the log for it..In the log it says the below
SCRIPT RUNNING TIME IN TOTAL:109.42 s.
LOG END TIME:2014-06-26 15:17:31
Amount of time to run script: 110797.19 ms
BADI EXECUTION TIME IN TOTAL :111233.64 ms.
[WARNING!] NO MEMBER SPECIFIED FOR DIMENSION:DATASRC WILL QUERY ON ALL BASE MEMBERS.
[WARNING!] NO MEMBER SPECIFIED FOR DIMENSION:INFLATION WILL QUERY ON ALL BASE MEMBERS.
[WARNING!] NO MEMBER SPECIFIED FOR DIMENSION:INTORDER WILL QUERY ON ALL BASE MEMBERS.
[WARNING!] NO MEMBER SPECIFIED FOR DIMENSION:PROFITCENTRE WILL QUERY ON ALL BASE MEMBERS.
[WARNING!] NO MEMBER SPECIFIED FOR DIMENSION:PROFIT_ACCOUNT WILL QUERY ON ALL BASE MEMBERS.
[WARNING!] NO MEMBER SPECIFIED FOR DIMENSION:TIME WILL QUERY ON ALL BASE MEMBERS.
EXECUTION BADI:RUNLOGIC_PH
QUERY: OFF
WRITE: ON
Parameter DIMENSION not specified. ALL values used.
Dimension ACCOUNT not specified and doesn't exist in current context.
Error in RUNLOGIC call.
BADI EXECUTION TIME IN TOTAL :2.07 ms.
SCRIPT RUNNING TIME IN TOTAL:132.65 s.
Please advise.
individually they both work fine..meaning Try 2 and Try 3 works fine.
Try 2)
*START_BADI TRANSPROFITTOMAIN
QUERY = OFF
WRITE = OFF
*END_BADI
*START_BADI RUNLOGIC_PH
QUERY = OFF
WRITE = ON
LOGIC = CALCACCOUNT.LGF
APPSET = <appset name>
APP = MAIN
DEBUG = OFF
*END_BADI
Try 3)
*START_BADI TRANSPROFITTOMAIN
QUERY = OFF
WRITE = OFF
*END_BADI
*START_BADI RUNLOGIC_PH
QUERY = OFF
WRITE = ON
LOGIC = FLOW_BALANCE.LGF
APPSET = <appset name>
APP = MAIN
DEBUG = OFF
*END_BADI
Try 4) Default.lgf contains 2 include statements
*include FLOW_BALANCE.LGF
*include calcaccount.LGF
In this case it executes only the fist lgf in the sequence and ignores the other. I cant see anything in the log for the 2nd LGF.
*START_BADI TRANSPROFITTOMAIN
QUERY = OFF
WRITE = OFF
*END_BADI
*START_BADI RUNLOGIC_PH
QUERY = OFF
WRITE = ON
LOGIC = Default.LGF
APPSET = <appset name>
APP = MAIN
DEBUG = OFF
*END_BADI
Thanks
Krishna

G5 ALS Won't Boot Past Grey Screen...Bad Logic Board?

Hi all-
I did a quick search, and found various answers, but none specific to my situation, so below, please find my tale of woe, and I appreciate in advance any advice you folks could provide:
I have a G5, 2.0GHz, 20" iMac (upgraded to Leopard) that recently stopped booting past the grey screen/ chime. Somewhat irked, I did some trouble shooting to include the following:
1 - Reset SMU
2 - Zapped PRAM
3 - Run Apple Hardware Test (all tests passed)
4 - Repaired hard drive by booting to the install CD ... it returned errors that were not fixable, but since the log is on the computer that crashed, I don't have the errors to post here
5 - After that repair, the computer booted, so I ran disk utility again, repaired permissions successfully, verified the hard disk via S.M.A.R.T. (arguably, not the most reliable indicator of hard disk life).
6 - Just to be on the safe side, I did an Archive and Install.
All that done, I was able to use the computer for 2 days, and this morning, I woke up to find the fans a-blazin' and the computer non-responsive...I rebooted to...you guessed it!...a grey screen.
Luckily for me, my memory (akin to a steel trap!) served me well...I had the power supply changed two months ago under the repair extension program for my model iMac (bulging capacitors)..but they did NOT replace the logic board.
If you have made it this far, thank you for reading, I am building to my crescendo....
Being a slightly balding fellow, I have very little hair left to pull out here, so in desperation and with my recent power supply repair in mind, I pulled the back off of my beloved iMac (my very first Mac!) to reveal a bulging capacitor on the +logic board+.
My question: Could my symptoms be related to the logic board (remember the AHT passed), or might it be related to a bad hard drive (remember the S.M.A.R.T. status was verified)? Any troubleshooting steps I may have missed? I am going to bring it to my local Apple store, but wanted to know if there are any other ideas out there for me to try before making the 1.5+ hour trek south to a Mall.
Thank you all in advance for any advice you may have!
Best,
jason

Not only do you have a hardware problem, you should call Apple, tell them that you had the power supply replaced two months ago (you are within the 90 day warranty period), and ask that they replace the motherboard as well, since the previous repair didn't work.

Bad Logic Board. Can I use a MDD?

I have a Powermac G4 Quicksilver 800mhz x 2. I can I use a MDD Logic Board with the Quicksilver processors?

I would not do it. The processor modules for both machines are different designs not to mention the heatsink.
My answer is no.
Are you positive the Logic board is bad? did you run the apple hardware test CD that came with the Quicksilver to confirm it is indeed a bad board?
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Erase Imac g5 ALS With bad Logic Board?

I'm finally getting around to selling my old 20" Imac Power PC 2.0Ghz Ambient Light sensor. I'd like to do an erase, however I'm afraid it won't stay on through the process. It runs for 10-20 minutes and then dies. Sometimes I get over an hours use. I'm guessing the logic board is bad, from what I've read.
Can I boot in target mode and erase it with my new iMac? If I do that, will it erase the OS or is there an option where I can keep the OS on there, but erase everything else?
If I try to use the install CD to do a full reset and erase and my imac crashes during, is that bad?
I've already manually deleted all of my music, videos, pictures and installed applications, but I'm not sure if my credit card info was stored on it. Its been a while since I've used it.
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J

You can use Target Disk mode and then Disk Utility to erase it and then install an OS, but if it won't stay on for very long, it might not stay on in TDM either. Give it a try from your install disc, do a simple erase, then reinstall the OS.
Please post back with results,

Can't boot Ti book 500. Bad logic board?

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