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hp-15C faceplate
03-17-2023, 10:51 PM
Post: #1
hp-15C faceplate
Please see the attached image of my 1985 15C.
I did some research but I reckoned you guys would know best.

What has happened to the faceplate where it is white/grey?

I have read there is a clearcoat, has this been scratched away allowing the aluminium to oxidise? The white parts seem to be raised but I can't get it off with IPA.

I was thinking of following the guide in post 10 of this thread:
But I would like to know exactly what the issue is before sanding it.

Is there a known way to deal with this, also did that book on calculator restoration ever materialise?


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Messages In This Thread
hp-15C faceplate - Flare - 03-17-2023 10:51 PM
RE: hp-15C faceplate - Mark H. Shin - 03-18-2023, 05:14 PM
RE: hp-15C faceplate - Flare - 03-18-2023, 05:57 PM
RE: hp-15C faceplate - Mark H. Shin - 03-18-2023, 07:58 PM

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