The Museum of HP Calculators

HP Forum Archive 05

[ Return to Index | Top of Index ]

Card Reader
Message #1 Posted by Juan J on 7 May 2001, 10:19 p.m.

I have a couple of HP 41 card readers. Both started having trouble recently. The cause is that rubber wheel that disintegrates with age. Two cards I used came out with rubber sticked to them.

Can anybody out there supply me with spare rubber wheels? I would appreciate it.

Thanks.

      
Re: Card Reader
Message #2 Posted by Victor on 8 May 2001, 2:07 p.m.,
in response to message #1 by Juan J

Take a look at the article below. It talks about how to fix this problem.

http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/articles.cgi?read=57

            
Re: Card Reader
Message #3 Posted by Juan J on 9 May 2001, 9:42 p.m.,
in response to message #2 by Victor

Victor:

Thanks a lot.

                  
Re: Card Reader
Message #4 Posted by Ron K on 9 May 2001, 11:47 p.m.,
in response to message #3 by Juan J

Juan.

I recently repaired my card reader, had the same problem with "gummy wheel". I first put (2) #006 O-rings, and the reader would not read a card. So I replaced them with #005 O-rings and it works as good as the day I bought it.

Regards Ron.

                        
Re: Card Reader
Message #5 Posted by Juan J on 10 May 2001, 11:05 p.m.,
in response to message #4 by Ron K

Ron:

Thanks. One of the readers gave up after 20 years, the other after 18 years. Lasting value, as HP liked to say.

I still have to sit and repair them.

I'll keep you posted on my progress.

[ Return to Index | Top of Index ]

Go back to the main exhibit hall