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What are the symptoms of ' logic board failure' MBP 2009 Model

whoknows87

whoknows87

macrumors 6502a
Original poster
Aug 8, 2012
676
31
S.Florida
What causes a logic board failure?

What are some symptoms to watch out for that hint logic board failure ? or one in the works

those who are knowledgable please contribute :)
 
my old 2008 MBP died suddenly after 4 years RIP (it seems that reached the 4th year MBPs are on borrowed time) . I turned it off and then after half hour I turned it back on but I only got a black screen and the fan going on.

It's like a stroke, the older the MBP gets, the higher his chances to have a LBF they get...
 
There are a lot of different reasons a logic board might fail. The AHT suggestion may be the best one, but I thought you weren't able to boot off of it before?
 
mackid1993 said:
I'll just add, if it's Kernel Panics that you are having, a bad RAM stick could be the culprit. Happened to me with my old Macbook, most RAM manufacturers offer lifetime warrantees...
Click to expand...

I tried a few times no luck, is this compatible with ML? I know it mentions Lion but I dont think I saw anything about ML
 
whoknows87 said:
I tried a few times no luck, is this compatible with ML? I know it mentions Lion but I dont think I saw anything about ML
Click to expand...

To use AHT on your mid 2009 model you'll have to put the disc that contains the testing software into the optical drive and hold down "D" when you restart.
 
T5BRICK said:
To use AHT on your mid 2009 model you'll have to put the disc that contains the testing software into the optical drive and hold down "D" when you restart.
Click to expand...

Reading is fundamental lol, i scrolled down the page and noticed that it worked I did the basic test and it gave me no errors I did the extended got to 10 minutes and looks like it froze or something so I stopped, nothing happened and manually forced shut down and restarted , don't know if thats a a bad sign , ill try again later , the preliminary diagnostic supposedly tests the logic board amongst a few other things it came back with no errors
 
whoknows87 said:
Reading is fundamental lol, i scrolled down the page and noticed that it worked I did the basic test and it gave me no errors I did the extended got to 10 minutes and looks like it froze or something so I stopped, nothing happened and manually forced shut down and restarted , don't know if thats a a bad sign , ill try again later , the preliminary diagnostic supposedly tests the logic board amongst a few other things it came back with no errors
Click to expand...

When it's doing the extended test it can be unresponsive for long periods of time during the RAM test. When testing my memory I usually let it loop overnight and if it passes, then it gets the stamp of approval from me.
 
T5BRICK said:
When it's doing the extended test it can be unresponsive for long periods of time during the RAM test. When testing my memory I usually let it loop overnight and if it passes, then it gets the stamp of approval from me.
Click to expand...
Very true. The more ram you have the longer it takes & the duration is non-linear, tending to run much longer. Patience is the key as you certainly don't want to interrupt it. The test is quite comprehensive and valuable.
 
There are 50 gazillion ways for a motherboard to die, so listing all signs of failure is not an easy task.

If **** is not working, and replacing other parts doesn't fix the issue, you likely have a logic board failure.
 
whoknows87 said:
Reading is fundamental lol, i scrolled down the page and noticed that it worked I did the basic test and it gave me no errors I did the extended got to 10 minutes and looks like it froze or something so I stopped, nothing happened and manually forced shut down and restarted , don't know if thats a a bad sign , ill try again later , the preliminary diagnostic supposedly tests the logic board amongst a few other things it came back with no errors
Click to expand...

AHT is OS independent. If you are really worried, take it to the Apple store and have a Genius run a hardware test. When I had an issue with my machine, I took it there after I was pretty sure it was the RAM. Even after running AHT and doing boatloads of research, I was still super paranoid.

They gave the Logic board the all-clear, and even told me which stick was bad. Have Apple check your machine out if you are really paranoid about its condition. Believe me, I've been through this-- it's really really scary, especially when you rely on your computer, and don't have the money to repair it-- let alone replace it.

Let us know what happens. By the sound of it-- I'd put my money on a bad RAM stick, based on the fact that you passed the basic test-- and hung out on the last one. Download this program, and run it. If you Kernel Panic while it is running, you have bad RAM. http://www.kelleycomputing.net/Rember/

Again, if you upgraded your memory, it is likely that it has a warranty. If that's the case, you can fix your machine for free! :)
 
mackid1993 said:
AHT is OS independent. If you are really worried, take it to the Apple store and have a Genius run a hardware test. When I had an issue with my machine, I took it there after I was pretty sure it was the RAM. Even after running AHT and doing boatloads of research, I was still super paranoid.

They gave the Logic board the all-clear, and even told me which stick was bad. Have Apple check your machine out if you are really paranoid about its condition. Believe me, I've been through this-- it's really really scary, especially when you rely on your computer, and don't have the money to repair it-- let alone replace it.

Let us know what happens. By the sound of it-- I'd put my money on a bad RAM stick, based on the fact that you passed the basic test-- and hung out on the last one. Download this program, and run it. If you Kernel Panic while it is running, you have bad RAM. http://www.kelleycomputing.net/Rember/

Again, if you upgraded your memory, it is likely that it has a warranty. If that's the case, you can fix your machine for free! :)
Click to expand...

Apple I've been there twice first trip HD Issue , 2nd HD cable Third time logic board,, the HD Cable has been replaced and the machine works like a charm now, after all I can confidently say geniuses are not so well you know, with the help of so many contributors here I think everything is figured out now:D I will let it do the extended test overnight

Thanks again all:apple:
 
whoknows87 said:
Apple I've been there twice first trip HD Issue , 2nd HD cable Third time logic board,, the HD Cable has been replaced and the machine works like a charm now, after all I can confidently say geniuses are not so well you know, with the help of so many contributors here I think everything is figured out now:D I will let it do the extended test overnight

Thanks again all:apple:
Click to expand...

Oy vey... sounds like you've got quite the dud of a Macbook. Good luck!
 
T5BRICK said:
Actually it looks like the only problem he's actually had was the bad HD cable. The rest of the issues were mis-diagnosed.
Click to expand...

yup ( fingers crossed still though lol) trying to make me pay like money grows on trees if they investigated more they could've figured it out, but of course no quick try doesn't work suggest something costly and move on to the next customer...
 
Did the Hardware test the extended one overnight, took about 2 hours it came back negative, no problems found, hopefully this thing is accurate:D
 
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