Apple ii plus 's' key not working

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Apple ii plus 's' key not working

Hello everyone!

 

Last weekend I picked up an Apple ii plus from someone on craigslist and I believe I got a great deal on it. It came with a working hard drive, a Zenith monitor, hand controllers with the original box and another controller with a joystick and two red buttons on it along with a bunch of manuals and some software for it all for $100. When I came to pick it up, the owner was showing me that most keys were typing incorrectly, but when I purchased it and drove back home and fired it up, all the keys began working fine except for the 'S' key. It just does not work at all. I had desoldered it and examined the key by cracking it open and looking at the copper trace on it, but it looked fine. I desoldered the 'A' key next to it and put the key in the place of the 'S' key and again it was not working. So if it's not the key, then what else could it be? How do I go about determining another cause for it? I'm not great at electronics, but I can solder/desolder lol

 

Thanks!

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Since the rest of the

Since the rest of the keyboard seems to be working, you probably have a broken trace or via near the S key. Look carefully for a crack in one of the traces near the switch. Better yet, use an ohmeter to check for continuity across each trace and via connected to the S key switch. Once you locate the open circuit, you can use a small piece of wire to bridge it.

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Last seen: 4 months 9 hours ago
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jeffmazur wrote:

[quote=jeffmazur]

Since the rest of the keyboard seems to be working, you probably have a broken trace or via near the S key. Look carefully for a crack in one of the traces near the switch. Better yet, use an ohmeter to check for continuity across each trace and via connected to the S key switch. Once you locate the open circuit, you can use a small piece of wire to bridge it.

[/quote]

 

Oh, I appreciate that info! When I get a moment to open it back up again, I'll use my multi meter and set it to Ohms and try to figure it out. Thanks!

 

 

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