Re: ][ + control key locked

[wshek@ibm.net]

In <33C97F46.2DE40759@sinister.com>, Bob Keyes <bobk@sinister.com> writes:
>wshek@ibm.net wrote:
>> 
>> Anyone have any experience with keyboard encoder chips and such?
>> 
>> I have a ][+ with a keyboard symptomatic of control key always pressed when
>> it isn't. ie. press the single key 'g' get beep....press 'm' get cr etc.
>> Keyboard appears to be functioning properly by process of elimination but I
>> don't have another encoder chip to try.
>> Has anyone purchased parts for a ][+ recently? Would like as near original as
>> possible.
>
>It might be a broken key-switch. If that is the case:
>
>I had a ][+ that had a broken P key. I was able to unsolder that
>keyswitch from the keyboard and replace it with the one from my right
>Shift key.
>(It is the only redundant key on the apple keyboard). Of course, the
>system now looks like a smile with a missing tooth, but it works.
>
>--Bob Keyes

Bob,

Thanks! I feel confident I have isolated myself from broken keys. I had the 
contact plate off bottom of board and checked mechanical travel of all 
switches. Also checked switch contacts that ride on contact board. Boy
these keyboards were really cheesy. <g>

I think as previously suggested it may be a mis-seated chip or contact
and later today want to go though their suggestion list item by item.

To be sure control ket switch contact was not misshapen I did exactly
what you suggested swapping shift and control contacts. Result was
that shift key still worked and control function still locked.

Thanks.
-Walt