Folks,
Yay, I was wrong! The IC seems to be OK, the issue was a stuck-on kb
switch. A quirk of the Apple design causes the last-pressed key to repeat
continuously if any key is being held 'on'.
That leaves me needing two kb switches and possibly one 'tilde' key. This
is the beige IIe kb with small black print.
Thanks for the space,
Bill