GCP LED screen problem

[msc1958]

I've been experiencing a problem with the led screen on my GCP. Every 7 segment LED has the same a lit segment. It's the segment located in the "top half-left side". It's on all the time and makes reading the screen very difficult. The GCP switching functions work fine. I've tried the following and the problem has not been fixed:

1. Factory reset,
2. Reload from pc clean working backup
3. Opened the GCP and pressed down on the ver.113 chip and the one above it.
4. Removed and reseated the ribbon cable to the led screen

Any other suggestions that I can try to correct this? Thanks......Mark