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HP Forum Archive 14

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HP-34C construction question
Message #1 Posted by Ed Look on 31 Oct 2004, 1:40 a.m.

Does anyone here know when HP shifted from the solderless 34C (or other Spices) to the soldered? It's a made in USA unit.

Not an answer to your question...
Message #2 Posted by Vieira, Luiz C. (Brazil) on 1 Nov 2004, 10:53 p.m.,
in response to message #1 by Ed Look

Hi, Ed;

I read your post thinking I could help, but I have no information about soldered/solderless serial numbers. I own a few Spices (I had about twelve units, but I traded and gifted some of them...) and some have different assemblies. Because of reasons I'd never asked about, the serial numbers were erased, and it's a fact that the back half case can be changed with one another, so if units were refurbished, their serial # were also changed.

I remember reading some posts from other guys mentioning that either soldered or solderless units of the same type had a different number of the small, 8-pin DIP IC's (ROM and RAM). I saw an HP37E with three 8-pin DIP IC's, and if I'm not wrong, I read something about an HP37E with a single 8-pin DIP IC.

All of this information does not answer your question, but I thought I should tell you, based on my own observations, that you might find either an Spice with a construction type that does not match the serial # range for that particular case or a Spice with serial # that actually does not fit in that particular model range. Even if you have the serial # range, I'd guess that, in some cases, you'd not find a match.

Best regards.

Luiz (Brazil)

Edited: 2 Nov 2004, 12:24 a.m.

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