MacBook Pro Retina keyboard problems-- heat related?
The "r" key on my beloved mid-2012 MacBook Pro with Retina display is no longer working. A week ago it was fine, but over the course of a couple of days it pretty much stopped working. I have checked under the keycap and scissor mechanism. There is no damage and no significant contamination. I've blown it out with compressed air and even tried a few carefully selected residue-free solvents to wash out anything that might have been under there, but these efforts had no effect (positive or negative) on the key's behavior, which is what I'd expect given that the actual contact surfaces are permanently encapsulated within the laminated membrane assembly. It still works if I push down on the key and wiggle my finger around, but otherwise it's inert.
In looking around online for solutions, I ran a lot of Google searches, and I discovered an odd thing. This model of MacBook seems to be associated with more failures of individual keys than others, and the keys right around the "r" key seem to fail far more than other keys on this machine, based on the raw number of search hits and my own analysis of hundreds of individual hits to exclude those not related to this problem.
And then I found this:
This is an image from a Japanese article (described here in English: http://www.ubergizmo.com/2012/06/thermal-imaging-shows-hotspots-macbook-pro-retina-display/ ) showing thermographs of this same computer. (Note that the Japanese keyboard has slightly different key locations.) I know my own machine has always felt hottest right under the 4/5/6/e/r/t/y keys, and it probably runs hotter than a lot of people's machines since I keep it pretty busy.
And now I'm wondering if maybe the failure of the key is related to a design problem, with this heat causing premature ageing of the keyboard membrane.
So I figured I'd stick my nose in here and find out if, as Raymond Wolfinger observed in 1969–1970, the plural of anecdote is data. (Commonly misquoted now, of course, but see http://blog.revolutionanalytics.com/2011/04/the-plural-of-anecdote-is-data-after-all.html for the true story.)
Have you had, or heard of, key failures in the 2012 MacBook Pro with Retina display? Which key(s) were affected?
If there IS a clear trail of evidence here, maybe we can get Apple to authorize a warranty extension for new failures and cover the (very expensive! $800 or so at the Apple store) repairs that people have had to pay for in the past.