I have ab EBD with one of the displays having the top left vertical segment out. This is segment F on the stevekulpa repair guide. I have replaced the transistor on Q18, twice. I have also put in a new decoder. Segment still missing. I have moved the display to other slots and the segment is still missing. I put other displays where the faulty display was mounted and they work fine. Anything I can try besides the transistor or IC decoder? I've reflowed all the pins.