Re: Repairing HP41C Message #2 Posted by Vieira, Luiz C. (Brazil) on 21 Mar 2003, 8:56 a.m., in response to message #1 by Luis
Hi;
there is a way to completely replace broken posts, and I used the tecnique in at least three HP41 fullnut, but recovering existing, loose ones is a lo better and safe. Some guys use thin plastic slices and glue to dissolve the slices inside the posts holes. Then they drill it thin enough to allow a new thread to be "made" with the screw itself.
You can also try to solder the mainboard to the keyboard. It has also been done, look here. I just warn you that this is a one-ticket trip. Once done there is no way to get back. Both mainboard and keyboard golden plated contacts will never be able to hold zebra connectors again. I'd use this technique as the last shot ever.
Many guys in here mentioned that one can buy standard, comercialy available flexible zebra connectors and cut them to fit anywhere. I would like having the chance to find and buy these connectors for testing, because they seem to be the only way out in these cases, I think.
If you go for soldering, think you will not be able to use the mainboard in another calculator OR use another mainboard in your unless you solder them again.
Success.
Luiz C. Vieira - Brazil
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