Hp-41C card reader

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Hp-41C card reader - dead

05-26-2022, 11:53 AM

Post: #111

teenix Offline

Senior Member

Posts: 2,045
Joined: May 2016

RE: Hp-41C card reader - dead

It may not be the card reader mechanics, it could be something else like the CPU board, or the card reader circuitry. That will difficult to narrow down, but an oscilloscope may help to check the operating the signals.

cheers

Tony

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Messages In This Thread

Hp-41C card reader - dead - Vintage63 - 03-27-2020, 06:05 PM

RE: Hp-41C card reader - dead - aurelio - 03-27-2020, 07:05 PM

RE: Hp-41C card reader - dead - teenix - 03-27-2020, 09:39 PM

RE: Hp-41C card reader - dead - Vintage63 - 04-02-2020, 09:36 PM

RE: Hp-41C card reader - dead - teenix - 04-02-2020, 09:44 PM

RE: Hp-41C card reader - dead - aurelio - 04-02-2020, 09:51 PM

RE: Hp-41C card reader - dead - teenix - 04-03-2020, 12:19 AM

RE: Hp-41C card reader - dead - BobVA - 04-03-2020, 12:16 AM

RE: Hp-41C card reader - dead - Vintage63 - 04-03-2020, 10:26 AM

RE: Hp-41C card reader - dead - teenix - 04-04-2020, 12:24 AM

RE: Hp-41C card reader - dead - UPDATE - Vintage63 - 04-29-2020, 08:52 AM

RE: Hp-41C card reader - dead - Vintage63 - 04-29-2020, 04:01 PM

RE: Hp-41C card reader - dead - Erik-M - 04-29-2020, 05:55 PM

RE: Hp-41C card reader - dead - Vintage63 - 04-29-2020, 09:48 PM

RE: Hp-41C card reader - dead - Vintage63 - 04-30-2020, 08:23 AM

RE: Hp-41C card reader - dead - Didier Lachieze - 04-30-2020, 09:30 AM

RE: Hp-41C card reader - dead - Erik-M - 04-30-2020, 11:06 AM

RE: Hp-41C card reader - dead - Vintage63 - 04-30-2020, 11:40 AM

RE: Hp-41C card reader - dead - Erik-M - 04-30-2020, 11:58 AM

RE: Hp-41C card reader - dead - rprosperi - 04-30-2020, 12:24 PM

RE: Hp-41C card reader - dead - Sylvain Cote - 04-30-2020, 12:59 PM

RE: Hp-41C card reader - dead - Dave Frederickson - 05-03-2020, 05:54 PM

RE: Hp-41C card reader - dead - mfleming - 05-05-2020, 02:16 AM

RE: Hp-41C card reader - dead - rprosperi - 05-05-2020, 02:55 AM

RE: Hp-41C card reader - dead - Dave Frederickson - 05-05-2020, 04:39 AM

RE: Hp-41C card reader - dead - rprosperi - 05-05-2020, 12:33 PM

RE: Hp-41C card reader - dead - mfleming - 05-05-2020, 01:50 PM

RE: Hp-41C card reader - dead - Dave Frederickson - 05-05-2020, 03:09 PM

RE: Hp-41C card reader - dead - Vintage63 - 04-30-2020, 01:01 PM

RE: Hp-41C card reader - dead - rprosperi - 04-30-2020, 10:54 PM

RE: Hp-41C card reader - dead - toml_12953 - 05-13-2020, 01:54 PM

RE: Hp-41C card reader - dead - rprosperi - 05-13-2020, 03:55 PM

RE: Hp-41C card reader - dead - Dave Frederickson - 05-13-2020, 07:07 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-01-2020, 08:43 AM

RE: Hp-41C card reader - dead - aurelio - 05-04-2020, 07:48 AM

RE: Hp-41C card reader - dead - UPDATE - Vintage63 - 05-12-2020, 02:27 PM

RE: Hp-41C card reader - dead - Dave Frederickson - 05-12-2020, 03:38 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-12-2020, 10:29 PM

RE: Hp-41C card reader - dead - Dave Frederickson - 05-12-2020, 10:48 PM

RE: Hp-41C card reader - dead - AndiGer - 05-13-2020, 04:20 AM

RE: Hp-41C card reader - dead - Vintage63 - 05-13-2020, 01:31 PM

RE: Hp-41C card reader - dead - AndiGer - 05-13-2020, 03:24 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-13-2020, 05:35 PM

RE: Hp-41C card reader - dead - AndiGer - 05-13-2020, 05:49 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-14-2020, 07:59 AM

RE: Hp-41C card reader - dead - AndiGer - 05-14-2020, 03:54 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-14-2020, 04:52 PM

RE: Hp-41C card reader - dead - rprosperi - 05-15-2020, 12:26 AM

RE: Hp-41C card reader - dead - teenix - 05-15-2020, 01:18 AM

RE: Hp-41C card reader - dead - Sylvain Cote - 05-14-2020, 05:11 PM

RE: Hp-41C card reader - dead - AndiGer - 05-14-2020, 05:25 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-15-2020, 12:30 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-15-2020, 02:30 PM

RE: Hp-41C card reader - dead - teenix - 05-15-2020, 03:08 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-16-2020, 09:39 AM

RE: Hp-41C card reader - dead - teenix - 05-16-2020, 12:00 PM

RE: Hp-41C card reader - dead - Erik-M - 05-16-2020, 07:01 PM

RE: Hp-41C card reader - dead - David Hayden - 05-16-2020, 07:56 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-17-2020, 12:39 PM

RE: Hp-41C card reader - dead - teenix - 05-17-2020, 01:34 PM

RE: Hp-41C card reader - dead - Vintage63 - 04-22-2022, 04:54 PM

RE: Hp-41C card reader - dead - teenix - 04-22-2022, 11:10 PM

RE: Hp-41C card reader - dead - Dreato - 04-22-2022, 09:59 PM

RE: Hp-41C card reader - dead - do2 - 04-22-2022, 10:42 PM

RE: Hp-41C card reader - dead - teenix - 04-23-2022, 02:21 AM

RE: Hp-41C card reader - dead - AndiGer - 04-23-2022, 06:27 AM

RE: Hp-41C card reader - dead - do2 - 04-23-2022, 10:47 AM

RE: Hp-41C card reader - dead - teenix - 04-24-2022, 05:05 AM

RE: Hp-41C card reader - dead - Vintage63 - 04-23-2022, 07:59 AM

RE: Hp-41C card reader - dead - teenix - 04-23-2022, 09:16 AM

RE: Hp-41C card reader - dead - Vintage63 - 04-24-2022, 05:17 PM

RE: Hp-41C card reader - dead - Vintage63 - 04-24-2022, 05:18 PM

RE: Hp-41C card reader - dead - Thomas Klemm - 04-24-2022, 06:16 PM

RE: Hp-41C card reader - dead - teenix - 04-24-2022, 11:36 PM

RE: Hp-41C card reader - dead - Massimo Gnerucci - 04-25-2022, 08:42 AM

RE: Hp-41C card reader - dead - 3p141592654 - 04-29-2022, 01:59 AM

RE: Hp-41C card reader - dead - teenix - 04-29-2022, 04:43 AM

RE: Hp-41C card reader - dead - Vintage63 - 05-19-2022, 05:55 PM

RE: Hp-41C card reader - dead - BillBee - 05-19-2022, 06:46 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-19-2022, 09:04 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-20-2022, 07:56 AM

RE: Hp-41C card reader - dead - do2 - 05-20-2022, 11:46 AM

RE: Hp-41C card reader - dead - Vintage63 - 05-20-2022, 12:55 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-20-2022, 09:26 PM

RE: Hp-41C card reader - dead - teenix - 05-20-2022, 10:56 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-20-2022, 09:28 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-21-2022, 04:25 AM

RE: Hp-41C card reader - dead - teenix - 05-21-2022, 10:54 AM

RE: Hp-41C card reader - dead - Vintage63 - 05-21-2022, 09:46 AM

RE: Hp-41C card reader - dead - teenix - 05-21-2022, 11:18 AM

RE: Hp-41C card reader - dead - Vintage63 - 05-21-2022, 04:47 PM

RE: Hp-41C card reader - dead - AndiGer - 05-22-2022, 05:03 AM

RE: Hp-41C card reader - dead - Vintage63 - 05-22-2022, 08:16 AM

RE: Hp-41C card reader - dead - AndiGer - 05-23-2022, 12:50 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-23-2022, 12:58 PM

RE: Hp-41C card reader - dead - teenix - 05-23-2022, 01:18 PM

RE: Hp-41C card reader - dead - AndiGer - 05-23-2022, 01:31 PM

RE: Hp-41C card reader - dead - teenix - 05-23-2022, 01:46 PM

RE: Hp-41C card reader - dead - AndiGer - 05-23-2022, 02:04 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-23-2022, 03:52 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-24-2022, 07:38 AM

RE: Hp-41C card reader - dead - Vintage63 - 05-24-2022, 12:33 PM

RE: Hp-41C card reader - dead - BillBee - 05-24-2022, 04:55 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-24-2022, 10:43 PM

RE: Hp-41C card reader - dead - teenix - 05-25-2022, 01:37 AM

RE: Hp-41C card reader - dead - Vintage63 - 05-25-2022, 05:48 AM

RE: Hp-41C card reader - dead - teenix - 05-25-2022, 11:20 AM

RE: Hp-41C card reader - dead - BillBee - 05-25-2022, 11:07 AM

RE: Hp-41C card reader - dead - Vintage63 - 05-25-2022, 10:13 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-26-2022, 11:25 AM

RE: Hp-41C card reader - dead - teenix - 05-26-2022 11:53 AM

RE: Hp-41C card reader - dead - Vintage63 - 05-26-2022, 01:22 PM

RE: Hp-41C card reader - dead - BillBee - 05-26-2022, 03:48 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-26-2022, 04:10 PM

RE: Hp-41C card reader - dead - BillBee - 05-26-2022, 05:42 PM

RE: Hp-41C card reader - dead - AndiGer - 05-26-2022, 06:52 PM

RE: Hp-41C card reader - dead - BillBee - 05-26-2022, 06:56 PM

RE: Hp-41C card reader - dead - Vintage63 - 05-29-2022, 03:55 PM

RE: Hp-41C card reader - dead - teenix - 06-01-2022, 12:16 PM

RE: Hp-41C card reader - dead - Vintage63 - 06-01-2022, 01:23 PM

RE: Hp-41C card reader - dead - Vintage63 - 06-03-2022, 11:58 AM

RE: Hp-41C card reader - dead - AndiGer - 07-07-2022, 01:47 PM

RE: Hp-41C card reader - dead - teenix - 07-08-2022, 03:12 AM

RE: Hp-41C card reader - dead - Vintage63 - 07-23-2022, 01:12 PM

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