I got a cheap mid2011 iMac for parts - just for fun wanted to figure out what is wrong with that machine. So it is basically unusable, no wifi, no bluetooth, no USB and no Thunderbolt to get all of that back externally. Everything else works tho. Interestingly enough the camera works. Tomorrow I will open that thing to see if there is even a BT and wifi module still in there, but the guy I've got it from said he only removed the HDD. Luckily Firewire worked so I booted from there. The ethernet works too so I could screen share my way in. I stressed the GPU a bit to see if it works because that is what I'm after. But it really puzzles me that it seems the machine was fried but still runs well actually. The CPU held up a couple of Cinebench runs too - so no damage there (it seems). Have you guys any idea what the problem might be on the logic board? At first I thought the USB hub IC is dead but TB is dead too (also no display signal). The camera seems to be on another USB channel than the I/O hub. I'm really curios to see if the wifi module is actually in there (no info in the system profiler).