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The Bad Black 99/4A Keyboard


OLD CS1

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The beige model of the TI-99/4A usually has the oft-maligned post action keyboard with a membrane contact system contained within which is prone to failure. In my first blog post I was both happy and disappointed to find a couple of variants of the beige keyboard which had, respectively, the spring-leaf style contact with full square action and a non-Mitsumi model with the hated membrane contact system.

 

Generally the black keyboards are the full square action with spring-lead contacts. I am aware the black keyboards also came as post action models, but to my recollection I had not come across them before. Digging through storage this past weekend I found one black keyboard remaining from a bunch I was given some time back.

 

Made by "General Instruments | Keyboard Division" (upper-left, poorly exposed)

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Keyboard post

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On the up-side, General Instruments did try to prevent this from happening.

 

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My original post on the good beige keyboard is below.

 

https://atariage.com/forums/blogs/entry/12110-the-good-beige-994a-keyboard/

 

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