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Took a heat gun to my dead logic board! Success!
- Thread starter puttputt
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Thanks. I'll try different sections next time... which is probably going to be 6 or 7 days
another update....
since the last update I have had to reheat the logic board twice. Once it lasted 2 weeks, the other 1 week. Going over a week now since the last time.
I've been targeting only the 3 chips that have thermal paste on them.
It's still a pain to do this every week or 2, but feel a need to wait for the new models before replacing it.
since the last update I have had to reheat the logic board twice. Once it lasted 2 weeks, the other 1 week. Going over a week now since the last time.
I've been targeting only the 3 chips that have thermal paste on them.
It's still a pain to do this every week or 2, but feel a need to wait for the new models before replacing it.
PuttPutt
Hey pal,
I have had this problem with my macbook 15 and 17 inch.
the cause is from the GPU chip which if you are looking at the chips the very left one which actually says Nvidia on it.
To produce products so small they attach the chips to the mother/logic board with tiny balls of solder, unlike desktops which use a PCI or AGP slot. The solder Gets so hot in some cases especially with the Nvidia 8600 chip which our mac books have that it melts and once the machine is asleep or off for a while the solder dries detaching it self from the chip.
I have found a solution which so far has lasted me just over a month and still going strong. By using a heat gun at 400degrees about 10'' above the GPU chip for around 3min and moving to 8" away for 1min. once cooled i have a thin piece of aluminium a millimeter thin which i put in between the GPU and heat sink with paste on both side, which applies pressure to the chip.
I will post back if i encounter any problems, but if you are looking for ideas this is what i've done.
Regards Riccardo
Hey pal,
I have had this problem with my macbook 15 and 17 inch.
the cause is from the GPU chip which if you are looking at the chips the very left one which actually says Nvidia on it.
To produce products so small they attach the chips to the mother/logic board with tiny balls of solder, unlike desktops which use a PCI or AGP slot. The solder Gets so hot in some cases especially with the Nvidia 8600 chip which our mac books have that it melts and once the machine is asleep or off for a while the solder dries detaching it self from the chip.
I have found a solution which so far has lasted me just over a month and still going strong. By using a heat gun at 400degrees about 10'' above the GPU chip for around 3min and moving to 8" away for 1min. once cooled i have a thin piece of aluminium a millimeter thin which i put in between the GPU and heat sink with paste on both side, which applies pressure to the chip.
I will post back if i encounter any problems, but if you are looking for ideas this is what i've done.
Regards Riccardo
The reason this is so common in electronics lately is because of the switch to non-leaded solder.
Yep. We did some SMT (http://en.wikipedia.org/wiki/Surface-mount_technology) stuff in school. We had a small oven though, you would place it on a belt and it would go through it at a certain speed, with temperature set at 3 stages. It was cool, and pretty hard to do if you had shaky hands since we placed the components by hand (not literally of course, but with vacuum pumps). There was a lot of resoldering after...
Actually I just found this article about baking SMD's in a toaster oven
http://www.ustr.net/smt/index.htm
Hello,
One of my Macs starts fine but will freeze after some time of use (around 45 minutes). I'm guessing the logic board doesn't support high temperatures; if I restart immediately, it will freeze again, I have to let it cool down to be able to use it 45 minutes again.
So, my question is: is heating the logic board supposed to work in this case? Anyone tried?
I don't want to look for a heat gun and take the risk to fry the LB if it wouldn't solve the problem anyway (which isn't a black screen at startup, as opposed to all posts I've seen).
One of my Macs starts fine but will freeze after some time of use (around 45 minutes). I'm guessing the logic board doesn't support high temperatures; if I restart immediately, it will freeze again, I have to let it cool down to be able to use it 45 minutes again.
So, my question is: is heating the logic board supposed to work in this case? Anyone tried?
I don't want to look for a heat gun and take the risk to fry the LB if it wouldn't solve the problem anyway (which isn't a black screen at startup, as opposed to all posts I've seen).