And you're right - the keyboard was miserable to fix, but it's done. Edit: The Keyboard has been replaced, but it is not fixed. There have been several false fixes, and Lewis claims it works fine when booted from his version of Maverick on their bench hard drive. I've tried it under Maverick, Yosemite, and El Capitan with the same result; q, w, e, r, t, y, u, and i keys fail when the system begins to warm up. I had thought the system was running hot, but an SMC reset seems to have helped that. The keyboard is new, Louis has given the motherboard a clean bill of health, so I'm out of ideas.
Loosen the fan standoff from the motherboard using a T6 driver.
Loosen the fan standoff from the motherboard using a T6 driver.
Loosen the fan standoff from the motherboard using a T6 driver.