View Full Version : Upgrading logic board on a ibook G3 700Mhz
Apr 6, 2007, 09:14 PM
Can you put a 800Mhz g3 logic board in 700Mhz g3? I read somewhere that I will have grounding issues. Is that true? Has anyone done this?
My ibook has been sitting here unused for the last 4 months and I would like to see if I could get it working. (The video chip has died and I have tried to get it back)
Apr 6, 2007, 09:17 PM
Check this (http://www.ifixit.com/Guide/Mac/iBook-G3-12-Inch/Logic-Board/50/17) guide on how to remove the logic board. If the 800mhz logic board is the same, it should work. Somebody correct me if I am wrong. My best friend once exhchanged an iBook G3's logic board with a iBook G4's logic board and it worked.
Apr 6, 2007, 09:35 PM
Have you tried the fix described here (http://www.powerbook-fr.com/ibook/bricolage/repair_g3_video_en_article797.html)? Basically it involves inserting something a few mm thick in between the plastic casing and the metal shielding the logic board, just under the video chip. Helps keep the video chip in place. I just tried it on my iBook last weekend and it's been working fine all week (after a year of being "dead"). I did have to do it twice, adding a thicker piece the second time since the first time it fritzed out after about 8 hours.
Unfortunately I don't know if there are any issues regarding the 800 MHz board in the 700 MHz case, though I kind of doubt there would be. If you go that route, definitely be sure to use the guides at http://www.ifixit.com/Guide/ as recommended above.
Apr 6, 2007, 09:38 PM
Thanks! I already have my ibook apart I just need to find out if I could swap in a 800Mhz logic board with out any issues before I buy the logic board
Apr 6, 2007, 09:43 PM
Have you tried the fix described here (http://www.powerbook-fr.com/ibook/bricolage/repair_g3_video_en_article797.html)? Basically it involves inserting something a few mm thick in between the plastic casing and the metal shielding the logic board, just under the video chip. .
Yes I did but it still does not want to work. There was also another write up about using a candle and I tried that and it worked for about 2 days.
Apr 7, 2007, 09:23 PM
anyone have a logic board or a cheap 12" ibook they want to sell?