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HP 32S Repair
02-26-2020, 05:02 PM
Post: #27
RE: HP 32S Repair
The top sheet is the sheet containing the dome-shaped contacts. The next lower layer is the spacer sheet with the larger holes. This is the only sheet I reuse. I reassembled the key assembly (calculator top cover), upper spacer sheet (the one with the larger holes), and the steel plate with the new SMT switches in that order. The heat stake mushroom tops were cut off in order to gain access to the original plastic switch assembly. To hold the modified switch assembly together, I used a hot glue gun with a general purpose hot glue stick and put a dab on each stake from the bottom side of the steel plate. I arranged the wires so that they avoid being pinched by the reasembled stack. Using moderate finger pressure, I pinch the calculator top cover and the steel plate together and apply a little glue to each hole. Once the hot glue cools and hardens, the assembly is done. The other plastic sheets are not needed and can be put to other uses or discarded.

This experiment is actually a trial run for repairing one of the more expensive calculators, such as the HP 42S. I plan to buy a broken unit that seems to suffer from a keyboard issue and repair it using this method. The hot glue makes the unit quite solid when it is assembled. It's a semi-permanent solution, since you can remove the glue if needed. So take it easy on the glue--you don't need much, and too much can actually interfere with the fit.
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Messages In This Thread
HP 32S Repair - jhg - 09-10-2016, 05:48 PM
RE: HP 32S Repair - Nick - 09-10-2016, 08:10 PM
RE: HP 32S Repair - Ed Wright - 09-11-2016, 12:28 AM
RE: HP 32S Repair - Marcio - 09-12-2016, 04:57 PM
RE: HP 32S Repair - gaster - 09-13-2016, 02:54 AM
RE: HP 32S Repair - Nick - 09-11-2016, 05:32 AM
RE: HP 32S Repair - jhg - 09-11-2016, 05:37 AM
RE: HP 32S Repair - BartDB - 09-12-2016, 03:04 PM
RE: HP 32S Repair - jhg - 09-12-2016, 04:29 PM
RE: HP 32S Repair - aj04062 - 09-13-2016, 12:45 AM
RE: HP 32S Repair - jhg - 09-17-2016, 08:58 PM
RE: HP 32S Repair - mfleming - 09-18-2016, 01:46 AM
RE: HP 32S Repair - jhg - 09-19-2016, 06:11 PM
RE: HP 32S Repair - Logan - 09-19-2016, 11:20 AM
RE: HP 32S Repair - BartDB - 09-19-2016, 12:13 PM
RE: HP 32S Repair - Logan - 09-19-2016, 06:58 PM
RE: HP 32S Repair - mfleming - 09-19-2016, 07:19 PM
RE: HP 32S Repair - jhg - 09-19-2016, 09:17 PM
RE: HP 32S Repair - mfleming - 09-20-2016, 02:52 AM
RE: HP 32S Repair - PANAMATIK - 09-19-2016, 09:15 PM
RE: HP 32S Repair - Geoff Quickfall - 09-20-2016, 07:15 PM
RE: HP 32S Repair - Logan - 09-20-2016, 09:27 PM
RE: HP 32S Repair - jhg - 09-23-2016, 11:47 PM
RE: HP 32S Repair - mfleming - 09-24-2016, 02:49 AM
RE: HP 32S Repair - kriskim - 02-25-2020, 06:40 PM
RE: HP 32S Repair - mfleming - 02-26-2020, 05:27 AM
RE: HP 32S Repair - kriskim - 02-26-2020 05:02 PM
RE: HP 32S Repair - mfleming - 02-27-2020, 01:32 AM



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