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geekhack Community => Keyboards => Topic started by: Hak Foo on Sun, 19 April 2009, 20:56:54

Title: IBM M: Difficult striking on large keys
Post by: Hak Foo on Sun, 19 April 2009, 20:56:54

I put my new 1391401 (9/7/90) back together.  All the keys work from an electrical standpoint, but I'm having trouble with the two shifts and Enter.  If you strike them at their outside edges, they often seize-- failing to go down unless you provide an astronomical amount of force, or sticking entirely.

The two shifts are a lot worse than "enter", and there's a little bit of the problem on the top haves of "+" and "enter" on the numeric area.

My "reference" 1391401 doesn't have this fault.

Will it wear down over time?  It seems to be opening up a bit as I smash it while typing this post.

Title: IBM M: Difficult striking on large keys
Post by: keyb_gr on Mon, 20 April 2009, 03:43:54

Have the same problem on my main IBM's right Shift. Must have something to do with the support. Perhaps using some silicone grease or similar will help.