Re: Help with Fried IIE Keyboard!

[swpeters@nyx10.cs.du.edu (Scott Peterson)]

>As someone who ha sbuilt a IIe from parts, I think I can help a bit. The
>keyboard encoder, or the keyboard ROM are most likely your problems. They're
>both on the main board. The encoder is an AY-3600-PRO or a KB3600-PRO. The pro
>stands for PROM. AY-3600 chips without the PRO have their own ROM, and do not
>require the extra ROM like the IIe does. THESE CHIPS ARE VERY HARD TO GET HOLD
>OF. In fact if anyone knows where I could get one I'd be glad to know, as

I had to replace the keyboard encoder.  Luckily my hunch was right.  The 
'a' key failed, but yet testing the keyboard electronics showed that the 
keyboard was ok.  I got the chip for about $20-30 from Alltech 
Electronics (they used to advertise in inCider -- I can't recall if they 
still advertise in II Alive).  Make sure you specify the model -- I did 
but I still accidentally got sent a IIc chip.  My IIe worked fine once I 
got the right one.
 

Scott Peterson
swpeters@nox.cs.du.edu