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Service Manual for SPICE series? (Dead 34C)
02-08-2018, 06:28 PM
Post: #1
Service Manual for SPICE series? (Dead 34C)
I got a very clean, very nice, but unfortunately completely dead 34C...
I have no idea what's wrong with it, and I couldn't find any chip info (pin definition, etc.) or internal design...
Any suggestions? I'm sure there is power.
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02-09-2018, 02:34 AM
Post: #2
RE: Service Manual for SPICE series? (Dead 34C)
* I think the problem should be the broken FPC that connects the battery terminals and the board. Will try to fix that with soldering.
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02-09-2018, 07:09 AM (This post was last modified: 02-09-2018 07:11 AM by jebem.)
Post: #3
RE: Service Manual for SPICE series? (Dead 34C)
If you search for hp spice repair here in the museum you should find some information.

The flex power cable is known to fail due to a number of reasons.
1. Battery leakage is the most common reason.
2. However the flex cable connection to the battery holder contacts can present high resistance due to aging (oxidation, dry electrolysis, you name it). Hp used metallic rivets as contacts, no soldering involved here, so we have two different metals pressed one against another.

I had the issue number two above on my Spice calculator.
Have used a ohmmeter to check the continuity and one of the battery contacts had high resistance (we need zero ohms here).

This is my 32e repair report:
http://www.hpmuseum.org/forum/thread-722...ight=Spice

Good luck with your repair.

Jose Mesquita
RadioMuseum.org member

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02-10-2018, 03:17 AM (This post was last modified: 02-10-2018 03:18 AM by Waon Shinyoe.)
Post: #4
RE: Service Manual for SPICE series? (Dead 34C)
Thank you Jose!
Here is a close shot of the broken FPC, which cause the negative terminal to float.
https://imgur.com/gallery/A2zxA
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