Re: MALFUNCTION CARD Message #5 Posted by Andreas Müller(GER) on 28 July 2002, 5:51 p.m., in response to message #1 by Marx Pio
Hi Marx,
just today I succeeded in repairing one of my cardreaders. It could write cards, readable on any other cardreader, but doesn't read any card, written by itself or by any other cardreader. Its a CARD RDR 1E type. What I did:
- Changed the Tantalum capacitors on the Sense Amplifier PCB (2x6,8µF/16V and 1x 3,3µF/16V) and
- carefully demagnetized the head (the card slot was completely disassambled to get as close as possible to the head - see Tony Duell's advice).
- Run some written cards through the reader (VER) until no errors occured (about 7 times the same card than another an so on)- There was an order I could observe: In very bad condition it displayed MALFUNCTION. As the conditions became better it displayed CHKSUM ERR.
From that moment on it could read any card I gave it to eat.
Regards, Andreas
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