Restoring a Compaq Portable

In my further adventures in restoring a Compaq Portable, I have these problems: 1) Missing brightness knob. Solution: I posted earlier about this. A few people in #classiccmp think they may have one. 2) Capacitive disks under the keys are rotten. Solution: http://www.retrotechnology.com/restore/sol_keys.html sounds good, except I'll use 3M 77 spray. 3) I can't get the keyboard to respond at all. I tried touching the capacitive pads with bare fingers, anti-static bag material, etc. Nothing works. Solution: I don't know. I suspect the scan driver and/or the sense amp chips may be bad. These are Exar 22-950-3B (sense driver) and 22-908-93A (sense amp). Does anyone here know a decent source of these and/or data sheets? -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?