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Eddy writes: > I have a TP701C (active matrix screen) and since I got the machine as = > new, I've tried to adjust to brightness using the Fn keys but I see not = > visible brightness change in the screen. The onscreen indicator does = > change though. As I posted here a couple of weeks ago, I recently had 2 TP701C units side-by-side; the screens were markedly different. One of them (call it Type A) did not vary at all with this control. The other (Type B) varied by a small but noticeable amount (and was also overall much brighter than the Type A screen). I've now had 4 different screens (2 on each of 2 different TP701s), 2 of type A and 2 of type B, and find the latter overall better. However: My first Type-A screen had no bad pixels, my second had one. My first Type B screen had 5 bad pixels, my current screen has at least 9! So, it could be that Type B has better brightness behavior, but worse quality control vis a vis bad pixels. Incidentally, I believe that as the years go by, the quality of replacement parts for these machines will deteriorate. Already IBM is using remanufactured (aka 'used') parts, and as they use up the best of these used parts they will have to turn to parts of inferior quality - I think this is why my latest screen has so many bad pixels. It might nevertheless have been the best they had around; the next customer might fare even worse. - David