Calculator LCD repair

By | November 12, 2012

My 12-year old Casio scientific calculator LCD stopped showing a couple of rows recently. After taking it apart, i found a flexible ribbon cable either glued or soldered to the edge of the PCB. As a first try, I heated the connection a little and it worked. Some slight finger-poking helped to find which part of the ribbon contact was faulty. I did not disconnect the ribbon completely, but simply warmed it up with a hot air soldering station at 120 degrees Celcius. Now the LCD is in order again.

Update: it has broken loose again, lasted 6 months :/

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