Apple 2e, keyboard not working

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Joined: Sep 13 2018 - 19:44
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Apple 2e, keyboard not working

Just picked up a apple 2e. Plugged it in and turned it on. Apple2 logo came on and control-reset turned it to applesoft but no other keys worked. Only keys working are contnrol, apple keys and reset. Tried resetting the cable to the motherboard. Any other tips would be appreicated.

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Last seen: 3 hours 38 min ago
Joined: Aug 4 2018 - 21:59
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The keys you describe as

The keys you describe as working dont use the keyboard controller or the keyboard ROM, the non functional keys however do rely on them.

So that is where I'd start looking for the fault.

 

 

 

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Last seen: 35 min 55 sec ago
Joined: Aug 18 2017 - 16:53
Posts: 13
Power supply ok?

The keyboard controller needs -12V.

It's the AY3600PRO. Pin 27 -12V, Pin 30 +5V, Pin 15 GND.

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