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I really didn’t think it would work, but after putting everything back together, I have a nicely working 2008 iMac again! I had a feeling that if it was in the oven that long, either the solder would start to creep or it would just start to melt the processor. I found another post that the guy was letting it ‘cool down slowly’ by turning off the oven and opening the oven door a bit for a half hour. After finding your post, I took it apart and baked the video card at 380 fahrenheit for 8 mins. I had no idea what was going on, but figured the video card was going out. It would work for an hour, then 15 mins and then it was toast.
#REPLACE MAC GRAPHICS CARDS FULL#
I noticed that full screen videos were starting to hang, then I got these horizontal artifacts all over the screen – looked like the Mac was trying to play breakout, lol. I will write back if it goes through the tunnel again to see the light at the end of the tunnel, of course light made of color’s bars. The sad news it that now I do not have any excuse to buy myself the Imac 27 Retina! Unfortunately with 16gb of RAM, 128 SSD and the 1TB for data, this computer manages quite well my RAW files from my 6D. I put all together (this time only one screw left…) and Magic! it came to live! And to celebrate it and taking advantage that the oven was already work, I cook a good steak, that for sure the smell was much better that the smell of burned electronics. I removed all the durst that was almost merged spinning fan. Before puting it again into the iMac I did some cleaning with my vacuum. I did not put any condiments, just the RAW Graphic card. The card was enveloped with oven-paper special for backing. I pre-warmed the oven at 200 Celsius and I baked it during 10 min. I thought, the iMac is not working anymore, what’s the worst case scenario on melting the “shit and bad designed” graphic card? I found this blog doing some research and as I had already experience opening it (I replaced the DVD and replaced with a 128Gb SSD), I was brave enough to remove the graphic card and bake it. At the end the imac started to reset when the bars appeared and finally it was impossible to wake up it. At the begging they were annoying and they appeared after some work with the imac. My iMac 27 Late’09 with the ATI Raedon HD 4850 had the typical symptoms with these bars. When I opened up the case, it was packed full of dust – probably why it overheated. Well, it finally broke down (third time’s the charm), and re-baking the card was the cure once again. It hasn’t stopped running since (it’s been almost 2 years). I also started using an external fan to help with air flow. So, I took it all apart again, re-baked the graphics card (at 400✯ this time), re-assembled the iMac, and the system booted just fine.Īt this p oint I figured the iMac was just overheating, so I installed Fan Control to boost the internal fan speed. So, that’s what I did.Īfter it cooled, I began the laborious process of putting it back together. I finally plugged it in and booted it up – to see if it was worth all that trouble.ġ9 days later, the symptoms returned.
#REPLACE MAC GRAPHICS CARDS HOW TO#
The first step was to dismantle the iMac and get the graphics c ard out. Luckily, there are some good online resources that show how to do that.Įventually I got the graphics card out and onto a baking sheet – it was ready.įrom what I read, it should bake for 10 min.
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Since I had nothing else to lose, I decided to give it a try. Baking it in the oven should re-melt the solder back together and fix the problem. The theory is that over time, the solder (metallic stuff that holds the connections together) gets weak and eventually separates a little – causing the graphics card to fail.
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Then, by some strange circumstance, I happened to be reading about people who baked their graphics cards in the oven and brought them back to life. That was more than I wanted to spend, so I just left the thing sitting in it’s box. It was going to cost $500 to replace the card. There were some strange vertical green lines on the screen and it froze on boot. I got an iMac in 2008 with a Nvidia GeForce 8800 GS graphics card. After about 2 years, the computer crashed.