Store the screws onto your schematic images, because the screws have different diameters and lengths. You should take pictures and draw schematic images before you remove screws or open connections. But don't magnitise your hard disk with that tools! Do the operation on a bed sheet lying on a big flatt table in order not to scratch your iMac. Magnetise your tools a little bit not to loose the screws. Although you may not need all that torx sizes, it is better to be prepared with such a variety of tools, if your computer contains some different torx screws than my computer. You need some screwdrivers for recessed head screws, and Torx screwdrivers of sizes T5, TT6, T7, T8, T9, T10. See following links about NVIDIA chips problems: I am very disappointed that my beloved Apple computer has such bad problems only after 11 months. I hope that the common problem is only intrinsic to the 7300 GT card, not to the 7600 GT graphics card. The new 7600 GT that I bought costs 212 Euro, about 300 dollars. Although the Apple store officialy does not know about this, I will contact Apple and NVIDIA if they can pay me that 200 dollars for my damaged card. Meanwhile NVIDIA has been known that they might pay about 200 Million dollars to it's customers due to such heat problems, about 200 dollars for each customer. The following image shows a screenshot of chaotic screen. I think, the summer heat and much heat due to heavy 3D graphics usage damaged the connections between VRAM on graphics chip again. The warmer the graphics card was, the worse the problems, from some strange pixels to crazy texture mixtures till computer crash. The new graphics card worked well for about 10 months until summer 2008. So I hoped to keep the graphics card cooler than before. Afterwards I increased the speeds of all fans in the iMac by smcFanControl and I controlled the different temperatures, especially the graphics card temperature. I suggested that the VideoRam of graphics card might have problems, so they replaced the grahpics card, a NVIDIA GeForce 7300 GT, by the same model. First they thought that RAM might be corrupt, but the hardware test program was ok. Within the one year warranty I brought it to Apple. After eleven months of error-free usage it showed some strange pixel rows during iMovie sessions. Why I changed the graphics card in September 2008 Ab hier gehts nur noch in Englisch weiter. Lass die Grafik-Karte am besten vom Apple-Händler tauschen. Du musst verdammt viel Erfahrung mit Elektronik- und Computer-Basteleien haben, andererseits wirst du den Computer komplett schrotten. For most people it is better to go to an apple store and let them replace the graphics card for you.ĪCHTUNG: Ich übernehme keinerlei Garantie für die Korrektheit dieser Seite. You must be very experienced in computer and electronics, otherwise you may kill the computer. NOTE: I do not guarantee for correctness of this page. #SMCFANCONTROL POUR IMAC HOW TO#Change graphics card of white iMac 24" (model September 2006) How to change graphics card of white iMac 24" (model September 2006) So wechselst du die Grafik-Karte deines weissen iMac 24" aus (Modell September 2006) This is part of homepage Alfred Dufter with Astronomy images
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