Re: Book on repairing HP calculators? Message #6 Posted by Geoff Quickfall on 16 Nov 2012, 1:32 a.m., in response to message #5 by Han
All families starting with the classics and ending with the stretch pioneers. So the HP 35 to the HP 48GX.
I am using the following machines as exemplars for disassembly, repair and reassembly. Some also include techniques for modification such as the 42s memory enhancement, 45 quartz installment, HP 34c radix change. Others to fix the standard failure points like the pioneers keyboard failures (stretch and normal pioneers).
HP 65
HP 45
- quartz crystal installation
HP 55
HP 97 disassembly including card reader and the printer with Katie Wassermans
gear replacement with photos for the printer.
HP 25c
HP 29c, 19c yes the printer too with photos for the printer disassembly
HP 34c soldered ICs
HP 33 floating ICs
HP 01
HP 41c
- card reader
- 41CL conversion.
HP 71B
- both internal versions
HP42s
- 32K increase
HP48SX, GX
APPENDICES
- 65, 67, 97 diagnostics program listings, diagnostic techniques for others...
- heat staked key repairs
- battery pack repairs for all families
- tools and sources for parts (o-rings, styrene rods, vinyl tubing...)
- glossary
- reference
And more...
Each calc has been disassembled and photo documented and then reassembled.
Lots of work and lots of techniques created by the members here, and they keep coming up with new ones!!!!
Edited: 16 Nov 2012, 1:26 p.m. after one or more responses were posted
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