Hi,
did anyone try to repair a 20series display? I got one display with a non working left digit. This seams to be a corrosion problem. A battery leaked into the whole calculator. Then I have another Display from a 20series wich has one faulty segment in the second digit from the right. Now I am wondering how to make one display for my (otherwise very good) 21 that I just bouth. I think there are two options. One is to cut the two display board in half, glue them togather and reconnect the copper lines. The other one is to try and replace the digit on the corroded board with a singel led, as in the 21 this digit is only used for the "-" in negative numbers. Both of those options seam to be very difficult. Any other suggestions? I will probably end up buying another non working 20series for the display :)
Thanks for reading all this nonsense :)
Regards,
Harry