I have a UNIS SLR T-85, a Yugoslavian copy of Texas Instruments Ti-30 SLR, and it's LCD has developed a black inverted vignette. This is irreparable damage, but from what? The calculator hasn't seen sunlight for over 2 years and the place it was stored at is neither moist nor too cold. I took the picture from an angle at which the characters are the most visible. Weiterlesen...