Re: Restoring an HP-55, advice appreciated ! Message #5 Posted by Alberto Fenini on 15 May 2012, 3:43 a.m., in response to message #4 by John Robinson
ciao John,
thanks for your reply,
I have a couple of HP45 that I can use as a donor and I will try to replace the led modules
Yes, it was Ben Ong I had in mind,I do have a replacement set for the back label.
I know him since at one point I wanted to have a spare label for every unit I was collecting. That was mostly for ther 65s and the 67s, which often get opened because of the card reader.
The keys were loose because the plastic insert that goes between the keys and the contacts board was missing. I had a spare and that has been replaced as well, including the thin plastic sheet that should prevent dust from reaching the inside of the unit.
Now the keys, neverless some are wrong, are firm and they click as they should.
The on/off switch is ok, it works and it is quite firm. A thin layer of multipurpose grease has been applied and it works like a charm.
The other is not, and I wonder if being a three positions switch it has a different interior size.
I can't recall it from the other unit I have and I don't take picture all the time I open a calc (I should ... I know).
Do you know if these are of the same length ?
again, thanks for help, Alberto
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