15.016 At my school we have a IIe that has some problem with its keyboard. When you push a key it keeps on repeating until you push another, which also repeats. Is there a cheap easy way to fix this?
Description
This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
15.016 At my school we have a IIe that has some problem with its keyboard. When you push a key it keeps on repeating until you push another, which also repeats. Is there a cheap easy way to fix this?
My experience is that this is more simple than it looks. You have one
stuck key. It is stuck down. Have you opened the machine and moved the
keyboard? If so you may have replaced it wrong, it is rubbing on one of the
edges. The key that is stuck is next to the edge.
If this does not apply to you, often pressing all of the keys until it
stops (because by pressing on the right key, it comes unstuck) will work.
By: Bruce R. Baker
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By: Dave Althoff
My first suspicion is a stuck key, and if this is a beige ][e, the first
place I'd look is the [`/~] key, adjacent to the power light.
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By: Owen Aaland
The escape is a likely key for this as it is located where it can easily
contact the case but does not exhibit any problems until another key is pressed
and then that key will repeat.
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From: Rubywand
If the KB Encoder IC or the IOU IC is loose or has pins making poor
contact, you could get the symptoms described.
Open the case and locate the KB Encoder (a big, 40-pin IC on the right
side of the motherboard just to the right of three ROMs). Use a small, thin-
blade screwdriver to scootch up the IC. (You want to get some lifting for all
pins, even if you end up just removing the IC.) Press the IC back into the
socket.
Do the same with the IOU (a big, 40-pin IC just to the left of the three
ROMs).
The idea of lifting up and re-socketing each IC is to let the socket
contacts scrape a fresh connection with each pin on the IC.
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