I have a Macbook, it's partially broken right now.
There is a stripe of pixels top to bottom on the screen, about 1/8 of the screen, running top to bottom that is flickering. It's not what Apple calls a "pixel anomaly", since it's not a single isolated spot; rather, it's a big stripe. It starts at the middle of the screen, and goes to the right from there.
I have Applecare (whew).
I ran TechTools Deluxe, their self-help diagnostic CD; all of the hardware that it tests checks out OK, including the video ram.
I double-checked the video issue at multiple screen resolutions, and it appears that the same screen stripe is fubar independent of resolution, which suggests that it's a problem with the screen itself and not the circuitry driving it. The external monitor looks fine.
@bdimcheff on Twitter noted that he had a similar problem which was "the bottom set of input circuitry on my LCD was falling off".
On hold to Apple Support right now (1030am EST), estimated wait 15min plus. I can still work. "Please continue to hold for the next representative".
I'm not going to fix it myself (did I mention Applecare)? But here are some people who did replace a Mac laptop screen:
A client of mine sent me a MacBook with a broken screen. It was his daughter’s computer, and she had accidentally broken the screen. I told him I couldn’t help him repair the screen, and he should look to Apple to make the repair for him. I turns out that the repair is 90% of the cost of the computer itself.
"Clear to me right now that it's a hardware issue; don't have to worry about it because it's a hardware issue. Need to send this one to our Apple Depot and have it fixed; the turnaround time is 5-7 business days. Genius bar doesn't have the parts to be sure and have it in stock, but you can ask them. Box delivered by DHL, just the computer into it; they will deliver it back to us; call them if it's ready for pickup. Box valid for 30 business days; always back up the files."
The next problem is to figure out a transitional period where I get a laptop for 5-7 days to work while my system is in the shop, and enough data and code on that laptop to make it work. Without going into an exhaustive search for rentals, it appears that the value of a machine for one week as a rental is in the $250 range.