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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Notebooks > A DIY iBook Dual USB Logic Board Repair

A DIY iBook Dual USB Logic Board Repair (Page 6)
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Fresh-Faced Recruit
Join Date: Jan 2011
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Jan 8, 2011, 08:18 PM
I just gave it a good roasting. When it cools to room temp I will test.
Fresh-Faced Recruit
Join Date: Feb 2010
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Oct 11, 2011, 11:29 PM
Just reading this thread. I have a Powermac G5 with a memory controller (Northbridge chip) with this issue. If I heat it up with a heatgun a bit, system boots fine, and will sometimes run for 12-18 hours. I bought a logicboard from epay for cheap, and it works, but has some issues, so I'd like to fix my original board.

When you guys put a piece of solder on top to tell the temperature, are you using lead-free or leaded solder to do so? I assume my 2004-2005 Powermac is ROHS compliant, so would be lead-free? Since lead-free has a higher melting point I would assume that would be what I would want to use so things get up to an appropriate temp?
Addicted to MacNN
Join Date: Mar 2004
Location: UK
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Oct 12, 2011, 04:34 AM
If you want to know the temp I'd recommend a laser thermometer. They are pretty cheap on eBay.
I have plenty of more important things to do, if only I could bring myself to do them....
Fresh-Faced Recruit
Join Date: Oct 2012
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Oct 5, 2012, 07:05 AM
I was wondering if anybody had pictures on this process?
I have a couple g3 Ibook that has logic problem and wanted to try this out.

Thanks, Bob
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