Random Shutdown Issue Possibly fan?

Question

MacBook Core 2 Duo

Model A1181: 1.83, 2, 2.1, 2.13, 2.16, 2.2, or 2.4 GHz Core 2 Duo processor

1203 个问题查看全部

Andrew Millar @andrewmill59330

声誉积分: 1

1

发帖于: 2010年7月10日

更多选项

Random Shutdown Issue Possibly fan?

I bought a Macbook second hand off ebay with the intention of fixing it. The problem described was an easy fix, simply reinstall OSX and it should work fine. So I did this and discovered it had another issue in that it reset all the time. This was fixed by buying a new heatsink and sensor but after about 6 months it started to reset again. I tried all the obvious options, i.e. RAM, hard drive, fan speed but decided I had to face the fact that I needed a new logicboard. I ordered one off ebay and a new heatsink to go with it and guess what, it resets too.

So now I am completely stuck. I don't think it's the fan since I used to run that at full tilt with SMC fan control. However, I am not certain as the logicboard I have used as a replacement is a core duo 1.83 GHz, and the board it replaced was a Core 2 Duo 2.0GHz. The Macbook booted fine and worked without needing a reinstall, except for the keyboard and trackpad. Also, SMC fan control had trouble getting the fan to spin up. It just seemed to reset after about 5 minutes which was around the sort of time it used to reset when I had the 2GHz chip in there.

Any ideas?

已回答！ 显示答案我也有这个问题

这是一个好问题吗？

是否

得分 -1

1条评论

When u say "reset" do you mean it reboots? Or do you mean your settings reset? Please be more descriptive of your issue.

由 Majesty 完成的 2010年7月10日

添加一条评论

1个答案

已选择的解决方案

Majesty @majesty68214

声誉积分: 20.7千

86

89

33

发帖于: 2010年7月10日

更多选项

Sounds like you need a new PRAM battery. You're throwing me off when you say reset cause I dont know exactly what u mean. But, if your SMC FAn control doesn't maintain it's settings for more than a few minutes, you might need to zap the PRAM or replace it.

这个答案有帮助吗？

是否

得分 1

8条评论:

It completely shuts down. But it used to simply reboot.

由 Andrew Millar 完成的 2010年7月10日

I've noticed that the fan does not spin on the Core Duo, but it works fine on the Core 2 Duo. I assumed that this fan would work in both equally well. Would a bad temperature sensor cause it not to work? I just bought a new one from ebay and I can't test it on the Core 2 Duo board as the connectors are different.

由 Andrew Millar 完成的 2010年7月10日

Andrew, I buy parts from iFixit even if they do cost a bit more than eBay because they send the correct part and I have confidence that it will work. I also don't have to spend weeks returning the part on eBay. I lost to many customers from bad parts on eBay. There are some exceptions like rdklinc but I won't buy from anyone without a 1000+ rating & 98% or better.

由 mayer 完成的 2010年7月11日

Alas ifixit do not have the part that I need.

由 Andrew Millar 完成的 2010年7月11日

The fan seems to be working now, the Macbook was able to run long enough to download an SMC update and an EFI update. Then it shutdown straight after. It seems to work fine until I try to run a big update. I am seeing the same random message I used to get on the Core 2 Duo, asking if I want to shutdown when I haven't pressed the shutdown button. CPU temperature is only 52 degrees according to SMC fan control. I am beginning to think that the keyboard might have something to do with this, as it sometimes requires me to reseat it to work. If it was malfunctioning it could be responsible for the shutdown question.

由 Andrew Millar 完成的 2010年7月11日

显示更多的3条评论

添加一条评论

When u say "reset" do you mean it reboots? Or do you mean your settings reset? Please be more descriptive of your issue. — Majesty
I've noticed that the fan does not spin on the Core Duo, but it works fine on the Core 2 Duo. I assumed that this fan would work in both equally well. Would a bad temperature sensor cause it not to work? I just bought a new one from ebay and I can't test it on the Core 2 Duo board as the connectors are different. — Andrew Millar
Andrew, I buy parts from iFixit even if they do cost a bit more than eBay because they send the correct part and I have confidence that it will work. I also don't have to spend weeks returning the part on eBay. I lost to many customers from bad parts on eBay. There are some exceptions like rdklinc but I won't buy from anyone without a 1000+ rating & 98% or better. — mayer
The fan seems to be working now, the Macbook was able to run long enough to download an SMC update and an EFI update. Then it shutdown straight after. It seems to work fine until I try to run a big update. I am seeing the same random message I used to get on the Core 2 Duo, asking if I want to shutdown when I haven't pressed the shutdown button. CPU temperature is only 52 degrees according to SMC fan control. I am beginning to think that the keyboard might have something to do with this, as it sometimes requires me to reseat it to work. If it was malfunctioning it could be responsible for the shutdown question. — Andrew Millar

MacBook Core 2 Duo

Random Shutdown Issue Possibly fan?

1个答案

添加你的答案