HP-41 Hardware
105 topics • Page 1 of 5 • 1, 2, 3, 4, 5
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- Reinforce HP41CV treads tutorial with pictures
by Guilherme Porto » Mon Feb 06, 2023 11:49 am
- 3 Replies
- 72992 Views
- Last post by paulomurteira
Tue May 07, 2024 9:48 am
- Reinforce HP41CV treads tutorial with pictures
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- Overvoltage Damage?
by Jim Frame » Sat Mar 30, 2024 4:40 am - 2 Replies
- 39279 Views
- Last post by Garth
Tue Apr 02, 2024 10:33 am
- Overvoltage Damage?
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- HP9114 Disk Drive
by Duncan » Wed Jan 17, 2024 8:44 pm - 3 Replies
- 59557 Views
- Last post by Duncan
Thu Jan 18, 2024 10:48 am
- HP9114 Disk Drive
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- Does anyone uk do repairs?
by emlclcy » Fri Dec 08, 2023 12:14 pm - 0 Replies
- 27973 Views
- Last post by emlclcy
Fri Dec 08, 2023 12:14 pm
- Does anyone uk do repairs?
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- HP 41CV Interchangeable Main Board
by vervalin » Mon May 23, 2022 6:25 pm - 4 Replies
- 86589 Views
- Last post by vervalin
Sun Sep 03, 2023 2:01 am
- HP 41CV Interchangeable Main Board
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- HP 41cv with USB power bank
by Guilherme Porto » Sun Nov 20, 2022 1:55 pm
- 5 Replies
- 80946 Views
- Last post by rprosperi
Wed Nov 23, 2022 1:40 pm
- HP 41cv with USB power bank
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- Repairing an abused HP41CV
by ve3oat » Fri Aug 26, 2022 1:20 am
- 10 Replies
- 134211 Views
- Last post by ve3oat
Thu Sep 01, 2022 8:15 pm
- Repairing an abused HP41CV
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- Display driver problem
by DanLins » Fri Jul 22, 2022 3:36 pm - 1 Replies
- 44903 Views
- Last post by floppy_stuttgart
Tue Aug 16, 2022 10:00 am
- Display driver problem
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- contactor damage. How bad?
by eroeder » Sun Apr 03, 2022 10:10 pm
- 3 Replies
- 60461 Views
- Last post by BillBee
Fri Apr 29, 2022 3:24 pm
- contactor damage. How bad?
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- 4 upper toggle keys stiff
by 3p141592654 » Tue Jan 25, 2022 7:58 pm - 2 Replies
- 49225 Views
- Last post by 3p141592654
Wed Jan 26, 2022 3:36 am
- 4 upper toggle keys stiff
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- Load time for HP41 accu pack?
by floppy_stuttgart » Fri Jan 14, 2022 6:42 pm
- 5 Replies
- 78547 Views
- Last post by floppy_stuttgart
Mon Jan 17, 2022 11:19 pm
- Load time for HP41 accu pack?
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- RAMBOX: what is this and how to recognize if from a picture?
by floppy_stuttgart » Sun Oct 31, 2021 3:10 pm - 3 Replies
- 60209 Views
- Last post by floppy_stuttgart
Wed Nov 03, 2021 5:32 pm
- RAMBOX: what is this and how to recognize if from a picture?
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- Further use of HP41CV with defect ports 2&4 ? or..?
by floppy_stuttgart » Wed Sep 01, 2021 4:17 pm - 5 Replies
- 80520 Views
- Last post by floppy_stuttgart
Thu Oct 14, 2021 10:15 am
- Further use of HP41CV with defect ports 2&4 ? or..?
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- HP41CV with unknown internal modification
by euleken » Thu Sep 16, 2021 8:33 pm
- 8 Replies
- 113300 Views
- Last post by floppy_stuttgart
Wed Oct 06, 2021 7:17 am
- HP41CV with unknown internal modification
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- HP-41 top mtg. screws
by John B. » Tue Aug 24, 2021 10:03 pm - 1 Replies
- 39302 Views
- Last post by Garth
Wed Aug 25, 2021 4:20 am
- HP-41 top mtg. screws
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- HP41 (only) protection box
by floppy_stuttgart » Thu Apr 29, 2021 2:17 pm
- 12 Replies
- 157084 Views
- Last post by floppy_stuttgart
Thu Jul 29, 2021 12:46 pm
- HP41 (only) protection box
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- Power Supply
by Poly-tour » Wed Jun 30, 2021 3:18 pm
- 4 Replies
- 73313 Views
- Last post by Poly-tour
Sat Jul 03, 2021 5:55 am
- Power Supply
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- Special Hardware Failure reg. Oscillator
by Stree » Sat May 01, 2021 1:43 pm
- 0 Replies
- 32145 Views
- Last post by Stree
Sat May 01, 2021 1:43 pm
- Special Hardware Failure reg. Oscillator
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- RS232
by Duncan » Wed Apr 14, 2021 7:39 pm - 3 Replies
- 62396 Views
- Last post by floppy_stuttgart
Mon Apr 26, 2021 1:39 pm
- RS232
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- New "Quad Module" is actually a "CCD A" — I've got questions
by Jordan Orlando » Wed Apr 21, 2021 8:40 am
- 11 Replies
- 149416 Views
- Last post by rprosperi
Fri Apr 23, 2021 3:21 am
- New "Quad Module" is actually a "CCD A" — I've got questions
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- "Extra' plastic piece fell out of 41C — Where does it go?
by Jordan Orlando » Thu Apr 15, 2021 2:43 am - 5 Replies
- 83888 Views
- Last post by Jordan Orlando
Thu Apr 22, 2021 7:19 am
- "Extra' plastic piece fell out of 41C — Where does it go?
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- Quad Memory module changes "CAT" function
by Jordan Orlando » Wed Apr 14, 2021 1:38 am
- 10 Replies
- 141608 Views
- Last post by Jordan Orlando
Sat Apr 17, 2021 2:47 am
- Quad Memory module changes "CAT" function
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- 41C and modules from eBay — "NONEXISTENT"
by Jordan Orlando » Sun Apr 04, 2021 11:24 am
- 7 Replies
- 109586 Views
- Last post by Jordan Orlando
Mon Apr 05, 2021 1:28 am
- 41C and modules from eBay — "NONEXISTENT"
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- HP41 and hp16 emulation
by ystone21 » Fri Mar 19, 2021 9:36 am - 5 Replies
- 86566 Views
- Last post by rprosperi
Sun Mar 21, 2021 7:41 pm
- HP41 and hp16 emulation
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- Book on HP41 repair
by divasson » Sun Oct 04, 2020 8:02 am - 4 Replies
- 78804 Views
- Last post by pcscote
Mon Oct 05, 2020 11:41 am
- Book on HP41 repair
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