HP-41 Flex-PCB (improving replacement)


Hi all,

I think this may be useful. As I receive the last batch of Flex PCB replacements, I took a couple of them to fix damaged 41's of my own.

When I was in the point of beginning with the bending process I realized that the sharp 90º angles needed at (green) lines 1, 2, 3, 4, 5 and 8 will be far more easy to obtain if I pierced the Flex PCB along these green lines. (see picture)

Using a steel pin, carefully pierced between the tracks along the lines 1, 2, 3 & 4.

And about 1mm step along lines 5 & 8.

As a result the bending process is much more easy and the final shape is achieved and kept with more precision.

Best from Spain.


Possibly Related Threads...
Thread Author Replies Views Last Post
  HP-41(CL): The easiest way to transfer FOCAL programs from a Linux PC to the HP-41 Geir Isene 13 3,527 12-05-2013, 02:40 AM
Last Post: Hans Brueggemann
  HP Prime Program: Sampling Without Replacement Eddie W. Shore 13 2,466 10-04-2013, 12:22 AM
Last Post: Joe Horn
  HP48GX screen replacement Francisco Quiles 9 2,314 10-03-2013, 09:17 PM
Last Post: Francisco Quiles
  HP 2225D+ RAM failure/replacement Luca 4 1,314 09-10-2013, 01:46 PM
Last Post: Luca
  HP 15C-LE replacement still available? Borja 16 3,554 08-22-2013, 11:16 AM
Last Post: Michael de Estrada
  Battery replacement HP75C Chris H (UK) 1 757 08-05-2013, 11:02 AM
Last Post: Sylvain Cote
  Updated HP-41 Flex-PCB replacement guide. Diego Diaz 2 917 03-12-2013, 12:36 PM
Last Post: Diego Diaz
  PCB pictures of a HP10B, HP20S or HP21S? Christoph Giesselink 1 741 12-17-2012, 10:19 PM
Last Post: Randy
  HP 50G battery cover replacement wildpig 1 762 08-03-2012, 11:53 AM
Last Post: Tim Wessman
  HP41 post replacement experiment Bruce Larrabee 14 2,146 07-16-2012, 06:51 PM
Last Post: Bruce Larrabee

Forum Jump: